Ultra-high Pressure Deep Well Drilling Experience in Yingke-1 Well

1998 ◽  
Author(s):  
MingLiang Zhu ◽  
ShengQi Wang ◽  
Yuncai Mao ◽  
Jie Dong
Keyword(s):  
High Pressure ◽  
Well Drilling ◽  
Ultra High Pressure ◽  
Deep Well

Higher Pump Pressures Can Reduce Drilling Costs

1979 ◽  
Vol 101 (1) ◽  
pp. 59-65
Author(s):  
A. J. R. Van Strijp ◽  
R. Feenstra
Keyword(s):  
High Pressure ◽  
Penetration Rate ◽  
Operating Pressure ◽  
Well Drilling ◽  
Deep Well ◽  
Production Research ◽  
Improved Performance ◽  
Pump Pressure ◽  
Diamond Bit ◽  
Made In

Deep-well drilling costs can be reduced substantially by using higher mud pump pressures. This has been demonstrated during the drilling of 1267 m (4166 ft) of 12 1/4-in. and 8 1/2-in. hole with a land rig, using pump pressures approaching 35 MPa (5000 psi) over a period of six weeks. Drilling costs were reduced by 25 percent (approximately $134,000) in the test well as a result of the higher pressures. The tests used drilling bits which combined mechanical and jet action, viz., extended-nozzle bits and a diamond bit designed to withstand the increased mud velocities. Both types of bits gave significantly improved performance when used at the higher pressure. Further tests were made with standard downhole turbines driving conventional bits. Improved performance was achieved at the higher pressure, provided the correct bit was selected for the formation encountered. In these cases the increase in penetration rate was due to the higher mechanical power developed by the turbine rather than increased jet action at the bit. Of the four turbine runs, two were found to be more economic than rotary runs made in similar formations in the reference well. The high-pressure mud pumps and other conventional equipment used in the tests performed well at the 35 MPa (5000 psi) pump pressure. Two standard triplex mud pumps were provided with fluid ends of an Exxon Production Research design and manufactured in Germany under Shell supervision. No failures occurred during six months of operation and in general, the equipment performed with the same downtime at the high pressure as the conventional equipment used in the reference well at the usual operating pressure (21 MPa (3000 psi)).

Study on Multi-Functional Experimental Apparatus for the Performance Evaluation of HTHP Drilling Fluid

2011 ◽  
Vol 422 ◽  
pp. 10-16
Author(s):  
Fu Hua Wang ◽  
Rui He Wang ◽  
Xue Chao Tan
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Drilling Fluid ◽  
Dynamic State ◽  
Mechanical Transmission ◽  
Well Drilling ◽  
New Device ◽  
Deep Well ◽  
Experimental Apparatus ◽  
New Apparatus

With the development of deep well drilling technology, a new HTHP (High Temperature High Pressure) experimental apparatus LH-1 was developed to meet the need of research and evaluation of deep well drilling fluid. With the advanced dynamic seal technology, mechanical transmission and data sensing technology, this new apparatus has many kinds of HTHP testing functions in a body and could evaluate manifold performances at the dynamic state of high temperature and high pressure including HTHP dynamic or static filtration test, high temperature dynamic scattering test of drilling cuttings, HTHP dynamic sealing and plugging tests, ultra HTHP aging test and so on. The lab tests show that the new apparatus gains such advantages as novelty of the design, stability of the performance, accuracy and reliability of the experimental data and facility of the operation. Having overcome the defections of the old apparatuses, the new device can provide a new means of experimental researches for the evaluation of HTHP comprehensive performance of deep well drilling fluid.

scholarly journals НАУКОВІ ТЕНДЕНЦІЇ БУРІННЯ ГЛИБОКИХ НАФТОГАЗОВИХ СВЕРДЛОВИН

2019 ◽  
Vol 1 (1(31)) ◽  
pp. 18-21
Author(s):  
Мирослава Чернова
Keyword(s):  
High Pressure ◽  
Corrosion Fatigue ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Well Drilling ◽  
Gas Industry ◽  
Deep Well ◽  
Deep Wells ◽  
Deformed State ◽  
Drill Column

The essential problems in oil and gas industry are corrosion-fatigue breakage of drill column elements, sticking of drilling and heavy-weight drill pipes, taking place in drilling of directional and horizontal wells. The stickings are caused by friction, emerging between sides of hole and elements of drilling column. The frictions block assurance of core integrity in core receive. The failure resistance by using polymer and composite materials for surface treatment under influence of triboprocess and corrosion-fatigue breakage is considered in the article.The problem of deep well drilling is considered, which is connected with the prevention of the seizure phenomenon between the walls of the drill column and the barrel of deep wells. The design of the coupling connection of casing pipes with a high pressure sealing element is provided to provide the tightness of the casing columns at high pressure and temperature parameters. The elastically deformed state of the pipes with the inserted sealing element is scientifically substantiated.

scholarly journals Trans-lithospheric diapirism explains the presence of ultra-high pressure rocks in the European Variscides

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Petra Maierová ◽  
Karel Schulmann ◽  
Pavla Štípská ◽  
Taras Gerya ◽  
Ondrej Lexa
Keyword(s):  
High Pressure ◽  
Numerical Models ◽  
Classical Concept ◽  
Plate Interface ◽  
Ultra High Pressure ◽  
Common Process ◽  
Mountain Belts ◽  
Collisional Orogens ◽  
Rock Association ◽  
European Variscides

AbstractThe classical concept of collisional orogens suggests that mountain belts form as a crustal wedge between the downgoing and overriding plates. However, this orogenic style is not compatible with the presence of (ultra-)high pressure crustal and mantle rocks far from the plate interface in the Bohemian Massif of Central Europe. Here we use a comparison between geological observations and thermo-mechanical numerical models to explain their formation. We suggest that continental crust was first deeply subducted, then flowed laterally underneath the lithosphere and eventually rose in the form of large partially molten trans-lithospheric diapirs. We further show that trans-lithospheric diapirism produces a specific rock association of (ultra-)high pressure crustal and mantle rocks and ultra-potassic magmas that alternates with the less metamorphosed rocks of the upper plate. Similar rock associations have been described in other convergent zones, both modern and ancient. We speculate that trans-lithospheric diapirism could be a common process.

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