Laboratory and Field Testing of an Ultra-High-Pressure, Jet-Assisted Drilling System

Kollé, J.J.; Otta, R.; Stang, D.L.

doi:10.2118/22000-ms

Cited by 12 publications

(4 citation statements)

References 5 publications

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“…Water drive development is the main development of Shengli Oilfield. Digging deeper into the potential of remaining oil in water flooding reservoirs and increasing oil recovery are the foundation and key to achieving the eastern stability (Kolle et al, 1991;Vance and Kent, 2001). Shengli Oilfield water flooding reservoir integrated water 92.9%, some oil fields have risen to 96%, have entered the high water, high water-cut development period which bring great challenges to effective development (Boudaoud et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

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The structure optimisation of hydraulic mechanical screw pump

2019

IJSPM

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In the current stage of oilfield development, the screw pump is an advanced mechanical oil recovery process. In the oil and liquid lifting process, the screw pump with pumping force, high pressure, and strong pumping role requires good stable characteristics. This paper takes Shengli Oilfield water flooding development as the engineering background, aiming at the problem that the flow ratio of screw motor and screw pump affects the efficiency. The changing rules of influencing factors, such as luffing coefficient, eccentric coefficient, overflow area and relative sliding velocity, are analysed. With the amplitude coefficient and eccentric coefficient as decision variables, the paper optimises the equatorial short hypochromic curve to, get the best ratio of each head of the parameters and end line type.

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Section: Introductionmentioning

confidence: 99%

“…The current technologies (Kolle et al, 1991;Vance and Kent, 2001) choose the screw pump and the screw motor to rely on the experience. The target displacement and the variable pressure amplitude are not the optimal values.…”

Section: Introductionmentioning

confidence: 99%

The structure optimisation of hydraulic mechanical screw pump

2019

IJSPM

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“…However, the slow drilling speed limits the drilling of deep/ultradeep wells. To overcome this challenge, researchers have developed a number of tools to increase drilling speed, including downhole motor device, rotary percussion drilling tools, downhole hydraulic pulsed cavitation jet generators, and downhole torsional drilling tools [6][7][8][9][10][11][12][13][14][15][16][17]. Although these tools differ in working mechanisms, their energies are all from drilling fluid.…”

Section: Introductionmentioning

confidence: 99%

Development and Application of the Downhole Drilling String Shock-Absorption and Hydraulic Supercharging Device

Liu

Guan

Zhang

et al. 2016

Shock and Vibration

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It is a hot topic for deep/ultradeep wells to improve rock-breaking efficiency and drilling speed by available downhole energy. Based on different downhole energies and working conditions, specialized plunger pump is proposed to convert longitudinal vibration of drilling string into rock-breaking energy. Technical design is developed to generate high-pressure water jet. And then a simulation model is built to verify feasibility of the technical design. Through simulation, the influence law of key factors is obtained. On this basis, this device is tested in several wells. The result indicates this device can increase drilling speed as much as 136%. Meanwhile the harmful vibration can be absorbed. The energy from drilling string vibration is of high frequency and increases as well depth and formation anisotropy increase. By reducing adverse vibration, this device is able to increase the drilling speed and the service life also meets the demand of field application. The longest working time lasts for more than 130 hours. The performance of this device demonstrates great application prospect in deep/ultradeep resources exploration. To provide more equipment support for deep/ultradeep wells, more effort should be put into fundamental study on downhole drill string vibration and related equipment.

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“…With the exploration and development of oil and gas shifting from shallow to deep formation, the deep and ultra-deep wells drilling must confront the problems of slow drilling rate and high cost. Extensive laboratory and field studies have shown that high-pressure jets have the potential for significantly improving the rate of penetration (ROP) during the drilling of oil and gas wells [1,2]. Based on the above experimental results, the ultrahigh-pressure-jet-assisted drilling technique is developed and turned into a main method to increase the ROP in the drilling of deeper gas and oil wells where the rocks become harder and more difficult to drill.…”

Section: Introductionmentioning

confidence: 99%

Design of a Novel Down-Hole Pump with Hydro-Automatic Reversing Valve

Zhao

Guo

2013

AMM

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Ultra-high-pressure-jet-assisted drilling is a main technique for improving the rate of penetration in well drilling. In this paper, a novel down-hole pump with hydro-automatic reversing valve was designed and explained. The equipment is a kind of hydraulic piston pump in which the reversing valve, the core component of the pump, is a five-way, two-position control valve. With the explanation of the working principle, it is understood that the down-hole pump has simple operating principle. According to schematics of the assembly drawing, also it is known that the actuations of pistons, check valves and the reversing valve are not complicated. Calculation and analysis results indicate that the equipment can intensify the drilling mud to 140-170MPa within an area ratio of 9.9 and 11.9 theoretically.

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Laboratory and Field Testing of an Ultra-High-Pressure, Jet-Assisted Drilling System

Cited by 12 publications

References 5 publications

The structure optimisation of hydraulic mechanical screw pump

The structure optimisation of hydraulic mechanical screw pump

Development and Application of the Downhole Drilling String Shock-Absorption and Hydraulic Supercharging Device

Design of a Novel Down-Hole Pump with Hydro-Automatic Reversing Valve

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