Safe Drilling Technology for Horizontal Wells in Ultra-Thick Salt-Gypsum Rock in The Right Bank of The Turkmen Amu Darya

2017 ◽  
Author(s):  
Wanjun Li ◽  
Haiqiu Zhou ◽  
Wei Wang ◽  
Gang Wang ◽  
Yixin Gu ◽  
...  
2012 ◽  
Author(s):  
Bingshan Liu ◽  
Xi Wang ◽  
Wanjun Li ◽  
Shaoyun Zhang ◽  
Jianhui Dong ◽  
...  

2014 ◽  
Vol 530-531 ◽  
pp. 71-74 ◽  
Author(s):  
Xiang Feng Cao ◽  
Zhi Chuan Guan ◽  
Guang Tong Feng ◽  
Feng Sun

Magnetic guidance drilling technology is use of magnetic guidance instrument measuring the distance between the signal source and the location of the instrument, and it is used to control the well trajectory to connect or parallel the target layer. And it is an effective supplement of the existing steering drilling technology. At present, the magnetic guidance drilling technology is mainly applied to drill horizontal wells in pairs for the super heavy recovery, CBM horizontal connected wells, underground soluble minerals, relief well and so on. This paper introduces the research process of the magnetic guidance prototype.


It is now well known, says Mr. Farey, to many observers in geology, that the clay strata on which the metropolis is situated, extend north-eastward through Essex, Suffolk, and Norfolk, and are incumbent on the great chalk stratum, which reaches from the Isle of Wight to Flamboro’-head; and that these, as well as many subjacent strata that are known, dip in general to the south-east, and basset out, or appear at the surface in succession, to any one travelling toward the N. W., until he has passed certain strata of lias, clay, and sand. Beneath these, says the author, are found marks of an immense stratum of red marl, which seems (to him) to have extended over all the remainder of the British islands. In this stratum are contained local strata of gypsum, rock salt, sand, micaceous gritstone, &c.: to this stratum also, according to the author, belong the great nodules of slate, green stone, sienite, basalt, &c. that form hills or mountains, intersected by mineral veins, in the western parts of the kingdom. In many parts, however, the red marl itself is no longer found; but instead of it various strata, subjacent to it, have been elevated to a considerable height, and subsequently denudated by the operation of water, as observed by Dr. Richardson, in his remarks upon the basaltic comities of Antrim and Derry in Ireland.


2014 ◽  
Vol 513-517 ◽  
pp. 2586-2589 ◽  
Author(s):  
Xin Feng Du ◽  
Yong Zhe Zhao

Due to the unique reservoir characteristics of the coalbed methane (CBM) in China, many technical problems have to be studied and solved in the development of horizontal wells for CBM. In this paper, based on the V-type wells, we have summarized the many techniques involved in Drilling and completion of horizontal well for CBM in Binchang mining area, such as leakage protection and sealing, geosteering while drilling, remote connection, variable density cementing, Coal seam cavitation, fiberglass casing running into the well, and etc. It is pointed out that the air foam under-balance drilling will be the development direction for coalbed methane drilling technology.


2017 ◽  
Vol 4 (1) ◽  
pp. 48-55 ◽  
Author(s):  
Peijun Zhang ◽  
Yijun Gao ◽  
Cuirong Wan ◽  
Ronghe Liu ◽  
Li Zhang ◽  
...  

2014 ◽  
Vol 530-531 ◽  
pp. 151-154
Author(s):  
Xiang Feng Cao ◽  
Zhi Chuan Guan ◽  
Qing Long Liu ◽  
Feng Sun ◽  
Yun Long Xu

Magnetic guidance drilling technology is use of magnetic guidance instrument measuring the distance between the signal source and the location of the instrument, and it is used to control the well trajectory to connect or parallel the target layer. And it is an effective supplement of the existing steering drilling technology. At present, the magnetic guidance drilling technology is mainly applied to drill horizontal wells in pairs for the super heavy recovery, CBM horizontal connected wells, underground soluble minerals, relief well and so on. This paper introduces the situation of the magnetic guidance drilling technology.


1990 ◽  
Vol 30 (1) ◽  
pp. 300
Author(s):  
B. D. Lake ◽  
V. Santostefano

Future development drilling in Bass Strait will be challenged by small field sizes, thin oil columns and increasing drilling difficulty due to greater hole angle and reach. New drilling technology successfully introduced in the recent Bream, Whiting, Perch and Dolphin developments including Steerable Drilling Systems (SDS), Polycrystalline Diamond Compact (PDC) bits and Logging While Drilling (LWD) tools, coupled with the successful use of jackup rigs for miniplatform development, has given Esso the tools and confidence to meet the development challenges of the 'nineties. Bass Strait's first horizontal well has been successfully drilled and completed with further wells planned in the current Bream development. There still remain some areas requiring improvements, including hole cleaning in high angle holes. Improvements in this and other areas will further improve drilling capability.Given the right incentives Bass Strait drilling technology is well positioned for the challenge of oil development in the 'nineties.


2014 ◽  
Vol 530-531 ◽  
pp. 237-239
Author(s):  
Xiang Feng Cao ◽  
Zhi Chuan Guan ◽  
Feng Qing Ma ◽  
Yun Long Xu

Magnetic guidance drilling technology is use of magnetic guidance instrument measuring the distance between the signal source and the location of the instrument, and it is used to control the well trajectory to connect or parallel the target layer. And it is an effective supplement of the existing steering drilling technology. At present, the magnetic guidance drilling technology is mainly applied to drill horizontal wells in pairs for the super heavy recovery, CBM horizontal connected wells, underground soluble minerals, relief well and so on. This paper introduces the data processing and the related software development of the active magnetic measuring instrument.


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