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Novel method for increasing production and injection

A technology of injecting water and formation pressure, which is applied in mixing methods, chemical instruments and methods, earthwork drilling and production, etc. It can solve the problem that crude oil cannot flow to the bottom of the well, the dead angle of oil supply, and the inability to solve the problem of large-area oil supply at the bottom of the well, etc. problems, to achieve the effect of increasing producing reserves, increasing oil supply radius, and improving recovery

Active Publication Date: 2020-08-28
新疆赢华石油技术服务有限公司
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Problems solved by technology

[0005] The embodiment of the present application provides a new method of increasing production and injection, which solves the problem that the fracturing process in the prior art can only produce high-permeability oil supply channels in a certain direction, but cannot solve the problem of large-area oil supply with a bottom hole radius. The technical problem that the oil supply dead angle is formed, so that the crude oil in the low porosity cannot flow to the bottom of the well

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  • Novel method for increasing production and injection
  • Novel method for increasing production and injection

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Embodiment 1

[0024] figure 1 It is a schematic flow chart of a new method for increasing production and increasing injection in the embodiment of the present invention, such as figure 1 As shown, the method includes:

[0025] Step 110: Inject water into the formation using surface pump equipment, record the formation pressure and observe its change;

[0026] Further, the use of surface pump equipment to inject water into the formation, record the formation pressure and observe its changes, includes: when injecting water into the formation, it is necessary to continuously increase the flow rate of the injected water, so that the formation pressure can be continuously increased.

[0027] Specifically, compared with the fracturing process, the embodiment of the present application is to pressurize the formation, fill sand to expand capacity and increase fractures under the condition of small displacement and low relative pressure, so as to realize the expansion of water absorption radius and...

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Abstract

The invention discloses a novel method for increasing production and injection. The method includes the steps that water is injected into a stratum through ground pump set equipment, the pressure of the stratum is recorded, and the change of the pressure is observed; a pressure threshold value is obtained, wherein the value range of the pressure threshold value is larger than 0 and smaller than the bursting pressure of the stratum; whether the pressure of the stratum is within the pressure threshold value range or not is judged; if the pressure of the stratum is within the pressure threshold value range, the displacement of the pumped water is adjusted, and the pressure of the stratum is stable and is not larger than or equal to the pressure threshold value; after the pressure of the stratum is stable, gas starts to be injected into a vacuole generator mounted on the ground until the pressure of the stratum starts to be reduced; and meanwhile the stratum is filled with quartz sand, andpumping stops. Based on the vacuole principle, the technical effects that capillary tubes, small pores and micro-cracks of stratum rock are enlarged and communicate, the oil supply radius is greatlyincreased, the producing reserve is increased, and finally the recovery ratio of an oil well is increased are achieved.

Description

technical field [0001] The application relates to the technical field of oilfield production enhancement, in particular to a new method for increasing production and injection. Background technique [0002] Fracturing technology is an important technical measure for increasing production of oil and gas wells and increasing injection of water injection wells. It is not only widely used in low permeability oil and gas reservoirs, but also has achieved good results in stimulation of medium and high permeability oil and gas reservoirs. It uses the surface high-pressure pump group to inject high-viscosity liquid into the well with a displacement that greatly exceeds the absorption capacity of the formation, and builds up high pressure at the bottom of the well. , causing formation rocks to be broken and extended to a certain length. The newly generated cracks can be single or multiple, but the length and broken width are different. At the same time pump a certain amount of fill...

Claims

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Application Information

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IPC IPC(8): E21B43/26E21B43/267E21B49/00B01F3/04B01F5/04
CPCE21B43/26E21B43/267E21B49/008B01F23/235B01F25/31112B01F2101/48
Inventor 杜智超李成成杜宝华
Owner 新疆赢华石油技术服务有限公司
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