Method for improving water-flooding development effect of bottom water reservoir by utilizing multistage high-pressure water jet
A high-pressure water jet and bottom water reservoir technology, applied in the field of petroleum exploration, can solve the problem of increasing the swept volume of water flooding
Active Publication Date: 2015-03-11
CHENGDU NORTH OIL EXPLORATION DEV TECH
View PDF4 Cites 11 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0009] The production of traditional vertical wells and horizontal wells is only single-point and linear control. Multi-stage high-pressure water jets are used to manufacture multi-directional branch control. The seepage field of oil wells changes from conventional radial flow to linear flow, which increases the swept volume of water flooding.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0043] The oil-bearing area of the bottom water reservoir is all in contact with the bottom water. Therefore, the bottom water part of the reservoir will have an important impact on the production performance of the reservoir, so that the bottom water reservoir has its own development characteristics. Compared with edge water reservoirs, one of the most notable features in the development process of bottom water reservoirs is the coning of bottom water, forming water cones around vertical wells and water ridges around horizontal wells.
[0044] The method for improving the water flooding development effect of bottom water reservoirs by using multi-stage high-pressure water jets comprises the following steps:
[0045] Step 1: According to the structural position of the reservoir, the distribution of reservoirs, and the direction of remaining oil enrichment, select the best area for jet flow in bottom water reservoirs; The best area of jet flow in bottom water reservoir;
...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for improving the water-flooding development effect of a bottom water reservoir by utilizing multistage high-pressure water jet. The method comprises the following steps: step one, selecting the optimal jet region of the bottom water reservoir; step two, determining the number of jet oil wells, and carrying out statistical classification on the filtered oil wells; step three, developing the quantitative theory analysis of bottom water coning for the filtered oil wells, and adopting an improved bottom water coning model new algorithm to obtain the parameters, such as optimal critical speed and jet-avoiding height, of each single oil well by adopting the treatment of the high pressure water jet; step four, establishing an oil reservoir numerical simulation model according to the reservoir geology characteristics of an oil field; step five, determining the parameters such as the optimal point position, jet direction and jet angle of the high-pressure water jet according to the optimal critical speed and the jet-avoiding height which are obtained by theoretical calculation and numerical oil reservoir simulation.
Description
technical field [0001] The invention belongs to the technical field of petroleum exploration, namely a method for improving the water flooding development effect of bottom water reservoirs by using multi-stage high-pressure water jets. Background technique [0002] The main professional concepts involved in this technical field are as follows. [0003] (1) Bottom-water reservoir: If the oil-water contact (OWC) is very large, much larger than the vertical section of the oil layer, it is a bottom-water reservoir. Generally speaking, bottom water reservoirs have fast water breakthrough, especially reservoirs with poor oil-water mobility ratio, are prone to bottom water coning. The production effect of horizontal wells is better. If there is a certain degree of heterogeneity, water cones may be formed locally in horizontal wells, resulting in a large amount of water production. [0004] (2) High-pressure water jet: refers to pressurizing water to hundreds of atmospheric pressu...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/20E21B7/18E21B7/04G06F17/50
CPCE21B7/046E21B7/18E21B43/20G06F30/367G06F2111/10
Inventor 卢立泽蒋利平王贺华臧克一洪余刚李鑫刘榧黄凯黄海平孙照磊李建东张博杨鸿米中荣付辉桂碧雯张艺久符奇何巍杜新龙
Owner CHENGDU NORTH OIL EXPLORATION DEV TECH