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Oil reservoir water injection self-adaptive deep global regulation device and construction method

A control device and self-adaptive technology, which can be used in the fields of fluid production, earth-moving drilling, wellbore/well components, etc.

Active Publication Date: 2015-06-24
西安始创能源科技有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Conventional profile control and flood control methods have the problem of "either they cannot be injected, or they cannot be plugged, or the oil and water are completely blocked". Near the wellbore area, after the injection pressure of the water injection well increases, the injected water returns to the original water channel through the bypass flow, the effect of oil increase and water control is poor, and the effective period is short
At the same time, the construction equipment used in conventional profile control and flooding technology can only be used for single-well construction of water injection wells, which cannot meet the needs of overall deep regulation and treatment of water injection well areas

Method used

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  • Oil reservoir water injection self-adaptive deep global regulation device and construction method
  • Oil reservoir water injection self-adaptive deep global regulation device and construction method
  • Oil reservoir water injection self-adaptive deep global regulation device and construction method

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Embodiment Construction

[0086] like figure 1 , figure 2 The shown one kind of self-adaptive depth overall control device for reservoir water injection includes chemical dissolution and storage equipment and chemical injection equipment connected to the chemical dissolution and storage equipment through connecting pipeline 17 .

[0087] The medicament dissolving and storage equipment includes a cleaning and dredging medicament dissolving tank 1, a plurality of regulating medicament dissolving tanks 2 for dissolving regulating medicaments, and a medicinal liquid for mixing the regulating medicaments dissolved in the regulating medicament dissolving tanks 2 The mixer 5, the medicament storage tank 6 equipped with an agitator inside and the main liquid inlet pipe 4 connected to the liquid inlet of the medicament storage tank 6, the control agent is a flooding agent or a profile control agent. A plurality of the regulating agent dissolving tanks 2 and the liquid medicine mixer 5 are connected through a ...

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Abstract

The invention discloses an oil reservoir water injection self-adaptive deep global regulation device and a construction method. The regulation device comprises agent dissolution and storage equipment and agent injection equipment which is connected with the agent dissolution and storage equipment through a connection pipeline. The agent dissolution and storage equipment comprises a cleaning and unchoking agent dissolution tank, a plurality of regulation agent dissolution tanks, an agent liquid mixer, an agent storage tank and a main liquid intake pipe. The agent injection equipment comprises a main liquid delivery pipe, a plunger pump installed on the main liquid delivery pipe, a liquid distributor connected with a liquid outlet of the main liquid delivery pipe, and a plurality of liquid injection pipes. The construction method includes the following steps that firstly, a well area to be regulated is determined; secondly, the equipment is placed in position and connected through the pipeline; thirdly, water is injected, and a pressure drop curve is tested before regulation; fourthly, cleaning and unchoking are conducted before regulation; fifthly, oil reservoir water injection self-adaptive deep global regulation is conducted on a target stratum. The oil reservoir water injection self-adaptive deep global regulation device is reasonable in design, convenient to install and lay, easy and convenient to operate, good in use effect and capable of effectively improving water displacing oil work efficiency and crude oil recovery efficiency.

Description

technical field [0001] The invention belongs to the technical field of oil field development engineering, and in particular relates to an oil reservoir water injection self-adaptive deep integral control device and a construction method. Background technique [0002] With the development of the petroleum industry, most oilfields have entered the middle and late stage of water flooding development, and the phenomenon of explosive water flooding of oil wells caused by internal water channeling in the formation is becoming more and more serious, which has gradually become one of the technical bottlenecks restricting the sustainable development of old oilfields. At present, at home and abroad, the main method of controlling this problem is the construction method of high-pressure extrusion injection of profile control and flooding agent in water injection wells. Among them, profile control refers to the operation of plugging high-permeability layers from water injection wells, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/22E21B33/13
CPCE21B33/13E21B37/06E21B43/16
Inventor 蒲春生张更谷潇雨张磊
Owner 西安始创能源科技有限公司
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