Small-diameter tubular pump pump-passing depth checking perforating and pumping combined production method

Abstract

The invention relates to a small-diameter tubular pump pump-passing depth checking perforating and pumping combined production method. The method includes adopting a perforating and pumping combined pump and a small-diameter gamma depth checking gauge, tripping in a standing valve along with a perforating and pumping combined tubing string and a pumping-down tool to a design position, tripping in the small-diameter gamma depth checking gauge for pump-passing depth checking, adjusting the tubing string to enable a perforating gun to align to a perforating formation, tripping in a pumping rod plunger and a blanking plug, performing pump bumping and well completion, then performing annulus pressure perforating, and starting to pump and produce after perforating. By the technology, the purposes for accurate located perforating of oil sheets and pumping after perforating are achieved, oil layers are protected effectively, well control safety in construction is improved, and technical support is provided for well-killing-free production of high-pressure oil wells and high-gas-oil-ratio oil wells.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to a small-diameter tube-type pump-through-pump-correction-depth-shooting-production combined production method suitable for the development of oil wells with thin oil layers, many interlayers and low output. Background technique [0002] In oil exploitation, combined jetting and production combines perforation and oil pumping into one process, which not only shortens the operation period but also saves oil production costs, avoids the pollution of the ground environment, and effectively avoids the well killing fluid The pollution to the production layer protects the formation and increases the safety of well control. The combined injection and production process is especially suitable for the perforation operation of high-pressure oil wells or high gas-oil ratio oil wells, and plays an increasingly important role in the development of modern oilfields. [0003] The ...

AI Technical Summary

Problems solved by technology

However, in this pumping depth correction process, the fixed valve is generally pumped into the seat after the depth is adjusted. When the fixed valve is pumped, it is easy to pollute the formation; there are also processes that use a rod to detonate a pressure detonator from the oil pipe to detonate. The perforating gun is then lowered into the sucker rod. During the process of lowering the sucker rod, the wellhead is uncontrollable due to the downhole pressure, which is prone to blowout

[0004] For oil wells with large pump gun distance, thin production oil layer and low production, small pumps must be used for production. Due to the influence of the diameter of the pump barrel, the depth calibration instrument cannot perform pump depth calibration through the pump barrel, so it cannot achieve accurate Correction depth can easily lead to the deviation of perforation position, affecting the final oil production

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