Abstract:This article has reviewed the typical core drilling technologies used in continental scientific drilling projects in the word. The criteria for evaluating core drilling technology has been put forward, they are safety, coring quality, drilling efficiency and drilling cost. The main core drilling technologies used in scientific deep drilling projects in the word have been evaluated according to these criteria and a conclusion can be drawn that downhole motor/hydro-hammer and diamond coring method is the best deep core drilling method.

Abstract:“Scientific drilling constituency pre-pilot hole drilling program design, organization, implementation and research while drilling " as the important project of Fifth thematic research topics of SinoProbe, Its mission is in line with the Earth science research. Conditions in existing drilling technology level can reach the maximum depth, using the most advanced and safest drilling technology at the lowest possible cost, to get as much underground information, in order to meet the stringent requirements of the scientific objectives. The purpose of implementation of the project is mainly to improve the efficiency and quality of deep drilling. On the basis of geological survey and geophysical methods, respectively, for the the the 6~7 port pilot hole of the conditions are ripe constituency Scientific Drilling commenced the targeted technical design, including different target borehole drilling structure optimization design, the design processoptimize and conduct scientific drilling equipment configuration, continue to explore ways to enhance efficiency and to ensure the quality of the project, reduce holes accident, improve core recovery, etc. Thus, the project will play a decisive role in the earth science research goals can be achieved. This article describes the implementation and the initial results of the project .

Abstract:the Jinchuan science deep drill preliminary guide hole is one project of the continental scientific drilling location and scientific drilling experiments of drilling. Design drill hole depth for 2000~2500 m, mainly adopts S122, S75 and S95 wire coring drilling technology. Considering deep drilling and small ring gap characteristic during wire core and the complex formation mine characteristics of Jinchuan, drilling fluid becomes an important technical design link. In this paper, the Jinchuan preliminary guide hole mud system and performance index of the design method are discussed, and researching the little ring gap and the cycle characteristics of the mud in deep hole and the wire core process adaptability in complex formation conditions; This paper also relates to the mining collapse and leakage formation of breast wall scheme in the plan design.

Abstract:In order to solve the issue of storage, management and usage of the data which generate by drilling monitor in deep geological core drilling, combined with independent research and development of drilling monitor, we establish database of drilling parameters by using the toolkit of LabSQL to realize the function of insert or inquire drilling parameters. Combined with the the data in site of deep drilling, select drilling parameters from database to draw five series diagrams of those parameters. Analysze and estimate work condition by review those parameters curves which has certain significance for drillings and propose the conception for mining drilling parameters data further.

Abstract:Burial depth of marine gas reservoir in Yuanba region surpasses 6500m. There were some problems, such as high drag and torque, high temperature, which proposed higher demands for horizontal well drilling technology. Well Yuanba 272H was the first horizontal well deployed in Yuanba Ⅱ region, and the drilling construction is very difficult. By means of optimization design, advanced borehole trajectory control technology, drag and torque precise forecast analysis, application of advanced HTHP MWD, measuring and controlling problems under high temperature environment was resolved. Drilling fluid resistance to high temperature was used, and properties was adjusted immediately according to stratigraphic characteristics, and the demands of high-temperature stability, cuttings carrying capacity and lubricating property was meet. Through the construction of well Yuanba 272H, a set of drilling technology suit for ultra-deep horizontal well in Yuanba region was formed.

Abstract:As geological mine prospecting orientation changes direction into "to find mine in deep layer" ,the drilling project is more and more difficult. The geological boreholes in the future will be more deeper, and will be most inclined hole. As the result the situation of the formations will be more and more complex. Only insisting scientific drilling means, inheriting scientific drilling means, strengthen drilling scientific develop and renew, do better in scientific manage in system, standard, files, can we inject new energy in the drilling enterprise, mike it more vitality in the new geology exploration.

Abstract:Shale gas is a lind of important unconventional natural gas resources, shale is the source rocks of shale gas, and also its reservoir and cap rock, shale gas drilling has its characters and higher technical requirements. This paper aims to the physical and chemical properties and the stratum, analyzed the characters of shale gas drilling, and conduct the detailed research on the main problems during the shale gas drilling, such as the reason on well hole unstabilize, drilling equipments and tools, drilling method choose, design on drilling mud. On the base of practice and theory, put forward the principle of “fast drilling, inhibitory drilling mud priority” in shale gas drilling.

Abstract:In this paper, based on dense sandstone, carbonate rock oil and gas zone logging while drilling evaluation method, and the latest research achievements of shale gas logging, gives the shale gas reservoir evaluation while drilling key parameters measurement methods and evaluation standards, interpretation crossplot, combined with drilling successful Jian111 Drilling data are analyzed and discussed. The well is located in the upper Yangtze Platform in East Sichuan fold zone Shizhu composite syncline. Paper for everyone to shale gas, tight sandstone gas, tight carbonate rock gas explain the study provides useful reference.

Abstract:Jiannan Region of Lower Jurassic Ziliujing group Dongyue Temple argillaceous shale development, I Taguchii in the period of generally see good oil and gas shows. Shale gas reservoir source and reservoir type oil and gas reservoir, which belongs to the shale properties of reservoir, and has low porosity, ultra low permeability characteristics, this article through to the Jiannan structure artesian well group Dongyue Temple period of shale gas reservoir lithology, physical property, electric, gas bearing characteristics and reservoir "four properties" research, combined with core, mud logging, gas test data statistical analysis of shale gas reservoir physical property and electrical limit value, to further establish the effective thickness interpretation chart, draw shale gas quantitative interpretation of standard limit, for shale gas evaluation and interpretation provides reference.

Abstract:Some reservoir in the area of Pucheng in zhongyuan oilfield is dolomitic mudstone with mangy microfracture and pore space，but its permeability and porosity are very low．Considering its huge remaining oil potential，it is determined to implement multistage hydraulic fracturing at P1-FP1 well．Through that we studyed reservoir quality,analysed the minifrac and optimized fracturing parameters by fracturing software to acquire the appropriate fracturing operation parameters，and selected the optimal fluid and proppant．It has been successfully completed on the field，and a total of 2975 m3 fluid was pumped down into the hole with 308 m3 proppant added，and it obtained a certain effect after fracturing．The successful application will provide the technical basis and operation experience for the fracturing of the dolomitic mudstone reservoir.

Abstract:The horizontal well technology as an effective way to improve recovery and reduce development costs has been widely used at home and abroad. Development of horizontal wells in low-permeability reservoir can be several times the volume of the expansion of the reservoir drain, reduce the production of pressure, to increase crude oil production, however, the horizontal well cementing of the low-permeability reservoir has been difficult in the field. This paper focuses on the horizontal well cementing the status and difficult of the low permeability reservoirs in Shengli oil field, research ideas, optimized slurry system, the system has a zero-free water, low water loss, rheology, at right angles to thickening, micro-expansion, channeling the performance and strong features; Preferred the excellent performance of the wash prepad fluid, and cement slurry, drilling fluid compatibility, Using cementing measures to improve the quality of the horizontal well cementing in Shengli low-permeability reservoirs.

Abstract:Hydraulic fracturing is an important technology to improve production in low permeability reservoir, the performance of the fracturing fluid is also a key factor , which affect the increasing production of hydraulic fracturing. Fine quality ,high efficiency show the developing trend of blending technology. Based on the analysis of both the current technology problems of fracturing fluid blending and characteristics of thickening agent and solid additive,the key factor that limits the efficiency of fracturing fluid blending is pointed out ,and a new blending technology of fracturing fluid that promote dissolution rate and quality of fluid is put forward according to experimental research. By means of PLC, the fracturing fluid is blended automatically. The new blending technology and equipments have been applied in Daqing oilfield for more than two years. Practical application result demonstrates that the new technology possess characteristics, such as viscosity release quickly, accurate additive adding, all kinds of additive are mixed evenly, the dry power surround by water is eliminated in guar solution. The validity and reasonableness of the new technology is verified.

Abstract:Our company undertakes one oil shale exploration project of the Shell Companies in Jilin; this is the first time to get in the oildrilling filed from geologic core drilling for our company.The main rocks in this mining area are mudstone, sandstone, shale and clay rock. They are uneven thickness, changing frequently, soft and strong water senstivity. The key for successfully drilling is mud system and performance. After failed drilling No.1 and No.2 well of Dunhua, we developed a potassium salt / polymer drilling fluid, and applied to the Jilin Yitong, Nonga mining area and finished about 2375 meters. In the process of drilling, the well wall is stability, no drilling burying accident. We got higher drilling efficiency and better engineering quality.

Abstract:With the rapid development of China’s society and economy, the demand of water become more and more prominent. Particularly in recent years, in many parts of southwest, northwest and north China, severe drought occur, local people and livestock’s demand of water is extremely difficult to meet. Well drilling work is very urgent. Aim at the current situation that a part of bedrock wells yield low water , this paper carry out the research and test to raise water yield across bedrock wells fracturing, base on water wells fracturing mechanism, fracturing fluid, propping agent, and fracturing technology. One kind of hydraulic fracturing techniques which is suitable for our country situation is successfully developed, and it provides technical support for rational development and utilization of groundwater resources, also ease the tension of water shortage in many mountains.

Abstract:The history of directional drilling may be more than a decade that advances fast in recent years due to the boreholes deeper and deeper in the resource exploration and production. The fundamental knowledge and new development are broadly discussed in order to be better understanding and wise use of the technology. The definition of directional drilling, advances of the technology including borehole planning, borehole survey, measured data processing, telemetry systems, especially for the new development of deviation control like steering drilling tools are demonstrated. The applied fields and borehole types of directional drilling are enumerated. A new concept and technical measures of active control technique in the entire borehole for deep geological directional drilling are proposed.

Abstract:The potential of shale gas of Sichuan basin is enormous. In the Sizhufu syncline in this area, the Jx well has a successful unconventional industrial airstream in the shale of Zhenzhuchong section of Zhiliujing group. In other 2 wells in Dongyuemiao section of zhiliujing group, the industrial value also appears. Research indicates that in the western Hubei province and eastern Chongqing province, there are two different kinds of shale in Zhiliujing group. One is “shale with sandstone”which means layers of sandstone exist in layers of shale. Another is “share with limestone” which means layers of shale are sedimented with thin layers of limestone. The shale gas in both kinds of shale is active and has a large potential when the shale are mined.

Abstract:In order to enhance penetrate seed bettly, super high pressure jet drilling technology with high discharge is researched.Based on drilling geologic environment of Tarim basin, the super high pressure jet drilling scheme with high discharge & adequate bit pressure drop is proposed, and drilling rig is upgraded,to meet need for high pressure jet drilling scheme with high discharge. Based on drilling scheme, discharge capacity and bit pressure drop is optimized, and hydraulic compute software is programmed. Based on which, drilling parameters and drilling fluid performance parameters are also optmized. The result is used in five wells, and comparaed with conventional technology, penetartion rate with super high pressure jet drilling technology can be enhanced by 50%~260%，and drilling time can be reduced by 38%~58%. Drilling sticking problem can also be reduced obviously, and wellbore quality is better, as well as penetration rate and drilling efficiency are obviously enhanced.

Abstract:It is introdeuced that the long spiral rotary spray mixing piles were used on Beijing metro deep foundation pit engineering. When there were hard underground obstacles, the pneumatic DTH hammer was applied. It can drill the obstacles easily. The waterproof curtain piles were drilled smoothly,. The construction technique provides references for similar or related projects in the future.

Abstract:The borehole seismograph can monitor many weak seismic wave that the ground seismographic station cannot record， it can also reduce the ground noise interference and greatly improve the accuracy of the seismic source location. For the entire region of Jianghan Plain， the formation condition of which is thick cobble layer and viscous and easy hole shrinkage soil layer. This paper introduces the key technology of well drilling the project of earthquake monitoring well in Jingzhou， and the accident treatment of the breaking of rod in the process of drilling.

Abstract:Water survey compared with the general engineering survey has many complex influencing factors, this paper simply introduced the contents of the construction process, construction technology and construction safety water drilling engineering instance, hope to provide a reference for the majority of peers.

Abstract:The Exploration to the complex formation drilling problems about special subject studies of KinLongshan gold mine, have solved the mine complex formation drilling problems,and improved the efficiency of construction. It can provide reference for similar construction.

Abstract:the organic union of water pressure test and wire-line coring is the serious problem that must be solved, want to play the advantage of wire-line coring drilling in Water conservancy and hydropower engineering drilling.It Points out that water pressure test scheme not to extract tools can well adapt to Water conservancy and hydropower engineering drilling,through the analysis and comparison of water pressure test scheme not to extract tools and double embolization water pressure test.

Abstract:Air downhole hammer drilling is an effective construction technique in wells construction, a substantial increase in efficiency than the common-core rig. Practice of combined system of land and resources aid drought of Shandong wells, introduction to air DTH hammer drilling technique and its application in emergency drought relief wells, reflecting the superior DTH hammer drilling。

Abstract:This paper analyzes needs for application of high quality drill bits, indicates the research direction of high quality drill bits. It designs a kind of layer drill teeth, pressed using preliminary cold press, then sintered under press in mold into pregnant diamond drill bit. It gives the parameters of selection of raw materials and manufacturing, analyzes results of drill test. The results shows that: this kind of drill bits are good for improving drill conditions and drill efficiency, to effectively save energy consumption in the manufacturing of drill bit. It is a kind of drill bits with bright future of broad application.

Abstract:The failure incidents of friction crack of tool- joint box occur sometimes with the recent deep, ultra-deep wells and horizontal wells in complex working conditions, and has become an important form of failure of tool-joint box. In this paper, the macro-crack failure modes, micro-cross-section characteristics and the characteristics of phase change organizations of friction crack of tool- joint box are analyzed, and the failure mechanism of friction crack of tool-joint box is discussed by the force on the drill pipe joints, drill pipe joint materials performance , and put forward proposals and measures on how to prevent failure from the using, material properties and surface treatment of tool-joint box.

Abstract:aiming at the problems existing indrilling construction in complex formation, summing up experience and lessons, comprehensive treatment technique and measures including high efficiency long life wireline core bit, casing off tectonic belt and hole wall protection with good performance mud were adopted. As a result, drilling efficiency and hole quality were increased significantly and good economic benefit was obtained.

Abstract:This paper analyzes the geological exploration units field drilling hazard factors, according to different criteria, to discuss the site of drilling operations, to explore drilling operation need to take the safety technical measures and safety management measures and make safety emergency disposal scheme, make prevent and reduce drilling work safety accidents.

Abstract:This paper presented the operational principle of formation tester and overview and history of the inflatable packer. The structure and operational principle of packer were analyzed. The setting performance testing instrument was designed. The setting and relieving setting performance of packer was tested with the simulate working environment. The performance of dual inflatable packer was tested in the testing well, The inflation pressure and differential pressure of packer was proved during the testing. The successful application of inflatable packer in formation testing, supplied the significant reference value for the energy exploring and development tools.

Abstract:Greenstone belt golden ore prospecting project at Victoria Lake in Tanzania consisited of seven boreholes and a total of 2500 meters of drilling. In fact, twelve boreholes were completed and a total of 3201.2m meters of drilling were realized. It created our record of maximum drilling meters and drilling production in five months using one drill rig. The paper introduces drilling technologies used on this district from the aspects of geographic and geological overview, drilling equipments, drilling technologies, drill bit, drilling mud and main economic indicators. It may offer guidance for drilling in similar districts.

Abstract:Our Bureau has finished the task of drilling 26 wells in the participations of drought-resistant in Shandong by overcome many difficulties, which is inseparable from the scientific and effective site management. It made a systematic and theorizing summary from a global resource deployment, production technologies, construction processes, production safety and discipline system through the manager’s perspective. Designed to show that the quality of management of the project site and site managers directly determine the quality of project progress, quality, safety and effectiveness, which also represents the level of management and corporate culture of a unit.

Abstract:Uranium deposits in ruoergai, Northwest Sichuan plateau high stratum "leak, collapse, oversized, hole deviation ", is typical of the "deadly venoms and taste", rare domestic drilling complex formations. Through careful analysis and research, the technology improvement, of high quality mud system, successfully crossed the nearly 500 metres of carbonaceous rocks; continuous whipstocking successfully implement deep-hole directional drilling, provided a basis for hole in Quito, under complex formation.

Abstract:The coal mine gas is important factor affecting the coal mine production safety, at the same time as a new energy is increasingly important. Nearly horizontal directional drilling of CMM technology has been widely applied, in order to solve the security problems of coal mine gas and the development of new energy. The precise control of the drilling trajectory is the core of nearly horizontal directional drilling technology. This paper analyzes the factors that influence the directional drilling construction combined with drilling construction site, Summed up the experience and the law of the coal mine near horizontal directional drilling, and achieve the purpose of the precise control of the borehole trajectory.

Abstract:This main for production in the encountered of drilling quality technology requirements in the drilling hole oblique of provides, produced has some questions, for has some superficial of exploration, and combined engineering actual, simple describes has in engineering construction of solution approach.

Abstract:Percussion drilling has been widely used in oil and gas exploration, while there are still some problems, such as severe damages to drilling tools, low energy transfer efficiency. The energy transfer and rate of penetration are key parameters of the percussion drilling. According to the practical application of the percussion drilling, the calculation assumptions, establish the three-dimensional model, define the material properties and element types, meshing, define the contact, apply load are described. The finite element model of that the geophysical prospecting impactor-bit-rock interaction was established. The computer simulation was finished. The results indicate that: the energy transfer efficiency when the impactor piston impacted bit is 73.0%. The depth of that the bit broke the rock is 6.4 mm in one percussion-rotary drill. The impactor piston had radial velocity and displacement during the motion process. Its harm is very big. It should be reduced as much as possible. The results are further useful to extend the applications of the geophysical prospecting impactor and hammer bit.

Abstract:Now deep well drilling requires that drilling fluid has to resistant to high temperatures. Additives and clay have been preferred. And drilling fluid composition has been set up. The composition could maintain stable and low filtration rate after hot rolling test of 200℃ by 16 hours.

Abstract:With the development and promotion application of the trenchless horizontal directional drilling (HDD) technology, reflecting the deviation between the construction path and the design path became an important indicator of the quality. The paper introduced that the deviation between the construction path and the design path were drawn in the coordinate system, using the composite coordinates combining the Polar iso-distance net and Cartesian coordinate system. This method reflected the deviation between the construction path and the design path intuitively, and it had very intuitive and reliable significance for the acceptance.