Formation pressure measurement sub-section and formation pressure simulation measurement device
A technology for measuring sub-sections and formation pressure, which is applied in the field of measuring devices, formation pressure measurement sub-sections, and formation pressure simulation measurement devices, and can solve problems such as well leakage, abnormal gas detection that cannot be detected by gas measuring instruments, and failure to produce oil and gas.
Active Publication Date: 2021-04-27
CHINA PETROLEUM & CHEM CORP +1
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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 oil and gas storage. In severe cases, the oil and gas layer will be crushed to death, causing the gas measuring instrument to fail to detect the gas detection abnormality, and oil and gas cannot be produced during the gas test
However, it is difficult for the traditional wireline formation pressure tester to go deep into the well
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[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] Such as 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. Such as 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 pa...
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The invention relates to a formation pressure measuring sub-joint and a formation pressure simulation measuring device. The formation pressure measurement sub includes: a sub body, in which a fluid channel for drilling fluid to pass through is arranged; a measurement control system, which is arranged in the sub body, and the measurement control system includes an electrical control module, Hydraulic drive module and data acquisition module; wherein, the lower end of the short joint body is provided with a pressure bearing assembly, the pressure bearing assembly includes a contact head and a pressure relief channel passing through the contact head, and the electrical control module can control all The hydraulic drive module realizes the extension and retraction of the contact head from the nipple body, so that the contact head can abut against the well wall, and the data collection module can collect the pressure value in the pressure relief channel , and send the pressure value to the electrical control module. The use of the formation pressure measuring nipple can accurately measure formation pressure and improve drilling efficiency.
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...
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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