Stratum pressure measuring nipple and stratum pressure simulation measuring device

A technology for measuring sub-sections and formation pressure, which is applied in the field of formation pressure analog measurement devices, measurement devices, and formation pressure measurement sub-sections, and can solve problems such as gas detection abnormalities, oil and gas reservoir pollution, and lost circulation that cannot be detected by gas measurement instruments

Active Publication Date: 2016-04-06
CHINA PETROLEUM & CHEM CORP +1
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  • Description
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AI Technical Summary

Problems solved by technology

[0003] During the drilling process, when the drilling fluid column pressure is lower than the formation pressure, it will cause serious well kick or blowout accidents, but when the drilling fluid column pressure is greater than the fracture pressure of the formation, well leakage will occur again, polluting the well-drilled oi

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  • Stratum pressure measuring nipple and stratum pressure simulation measuring device
  • Stratum pressure measuring nipple and stratum pressure simulation measuring device
  • Stratum pressure measuring nipple and stratum pressure simulation measuring device

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with accompanying drawing.

[0035] The formation pressure measurement sub-joint provided by the present invention includes a sub-joint body 10 and a measurement control system, and the measurement control system is arranged in the sub-joint body 10 . The measuring sub of the present invention and its various parts will be described in detail below.

[0036] like figure 2 As shown, a fluid passage 3 is provided in the nipple body 10, and there may be multiple fluid passages, as shown in the figure, there are two. The function of the fluid passage is to allow drilling fluid to pass through it. like Figure 5As shown, the pup body 10 is connected to the drill pipe 1 during the drilling process, especially the bottom end of the drill pipe, which is close to the drill bit. When the drill bit is drilling, the measuring sub is used as a part of the drill pipe for fluids such as drilling fluid to pass thr...

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Abstract

The invention relates to a stratum pressure measuring nipple and a stratum pressure simulation measuring device. The stratum pressure measuring nipple comprises a nipple body and a measuring control system. Fluid channels are arranged in the nipple body, and drilling fluid can flow through the fluid channels; the measuring control system is arranged in the nipple body and comprises an electric control module, a hydraulic driving module and a data acquisition module; a pressure carrying assembly is arranged at the lower end of the nipple body and comprises a contact head and a pressure relief channel, the pressure relief channel is perforated through the contact head, and the hydraulic driving module can be controlled by the electric control module, so that the contact head can stretch out of the nipple body, can be withdrawn and can be butted onto well walls; internal pressure values of the pressure relief channel can be acquired by the data acquisition module and can be transmitted to the electric control module. The stratum pressure measuring nipple and the stratum pressure simulation measuring system have the advantages that stratum pressures can be accurately measured by the stratum pressure measuring nipple, and accordingly the drilling efficiency can be improved.

Description

technical field [0001] The invention relates to a measuring device in the technical field of oil and gas exploitation, and in particular to a formation pressure measuring nipple. In addition, the present invention also relates to a formation pressure simulation measuring device comprising the measuring short joint. Background technique [0002] Formation pressure is an important parameter in the field of oil and gas production technology, especially in drilling operations. On the one hand, accurate grasp of formation pressure can optimize operating parameters such as mud weight and equivalent circulation density, and prevent well kick, blowout, formation damage or accidental formation fracturing, etc. On the other hand, the occurrence of accidents can help the construction team optimize the algorithm for predicting formation pressure and make better operational decisions. At the same time, it can provide an important reference for the optimization of geological models, there...

Claims

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Application Information

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IPC IPC(8): E21B49/00E21B47/06
Inventor 牛新明郑俊华王磊宗艳波钱德儒夏赣民王强刘宇辉凌勇
Owner CHINA PETROLEUM & CHEM CORP
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