Stratum pressure measuring nipple and stratum pressure simulation measuring device

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can be controlled by the electric control module, so that the contact head can stretch out of the nipple body, can be withdrawn and can be butted onto well walls; internal pressure values of the pressure relief channel can be acquired by the data acquisition module and can be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...

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 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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