Unlock instant, AI-driven research and patent intelligence for your innovation.

Production string selection method for oil well development

A technology for producing pipe strings and oil wells, which is applied in the field of selection of production pipe strings for oil well development, can solve problems such as hidden safety hazards, sulfide stress corrosion cracking, and increased cost, and achieves extended service time, good corrosion resistance, and reduced occurrence of rate effect

Pending Publication Date: 2022-04-08
CHENGDU NORTH OIL EXPLORATION DEV TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that in the implementation of water injection in the later stage of oil well development, the water content of the produced fluid is constantly rising, and the CO 2 、H 2 S, Cl - It forms a complex corrosion environment with a variety of mineral ions, causing corrosion phenomena such as corrosion perforation, breakage, sulfide stress corrosion cracking, and hydrogen-induced cracking of the production string, which has brought huge economic losses and serious damage to the use of the production string. potential safety hazards, the purpose of which is that one aspect of the present invention provides a production string selection method for oil well development, which solves the problem of unreasonable selection of production strings in corrosive environments and cracks in production strings during oil well development And other phenomena, it is easy to cause safety accidents, and at the same time, it will reduce the service life of the production string, which will lead to the technical problem of increasing the cost of oil well development

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Production string selection method for oil well development
  • Production string selection method for oil well development
  • Production string selection method for oil well development

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046]Example 1: It is known that a typical oilfield is in the initial development stage, and the average reservoir depth is 2500m. According to the oilfield development plan, 100 vertical well development wells will be deployed, and the production string structure is: 3-1 / 2″ tubing 3+ downhole Safety valve+sliding sleeve 2+packer 4+seat short connection+ball seat, such as figure 1 shown. Now it is necessary to select the material and model of the production string that is both safe and economical according to the downhole corrosion conditions.

[0047] An oil well production string optimization method based on life cycle cost, the implementation process is as follows figure 2 As shown, it specifically includes the following steps:

[0048] S1. Obtain the basic data parameters of the production string, the first judgment standard information, and the corrosion data parameters after analyzing the corrosion environment of the wellbore, based on the first judgment standard inf...

Embodiment 2

[0094] Embodiment 2, the present invention also provides a computer device, including a processor; a memory for storing processor-executable instructions; the processor is configured to execute a method for oil well development provided in Embodiment 1 For the selection method of the production string, the computer equipment can be a desktop computer, a notebook, a palmtop computer, and a cloud server.

Embodiment 3

[0095] Embodiment 3. The present invention also provides a computer-readable storage medium, including a stored computer program. When the program runs, it executes a production string selection method for oil well development provided in Embodiment 1. The computer can The read storage medium can include high-speed random access memory, and can also include non-volatile memory, such as hard disk, internal memory, plug-in hard disk, smart memory card (Smart Media Caed, SMC), secure digital (Secure Digital, SD) card , a flash memory card (Flash Card), at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

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

No PUM Login to View More

Abstract

The invention discloses a production string selection method for oil well development, which comprises the following steps of: acquiring basic data parameters of a production string, first judgment standard information and corrosion data parameters after a shaft corrosion environment is analyzed, determining a primary production string according to the corrosion data parameters and the basic data parameters based on the first judgment standard information; acquiring second judgment standard information and a corrosion rate parameter after the primary production pipe column is subjected to a simulated working condition corrosion weightlessness experiment, determining a qualified production pipe column according to the corrosion rate parameter based on the second judgment standard information, and acquiring related data parameters of a life cost cycle model, according to the method, the corrosion rate is reduced by preferably selecting the production pipe column, so that the occurrence rate of safety accidents is reduced, and the cost of oil well development is reduced.

Description

technical field [0001] The invention relates to the technical field of oil well development and construction, in particular to a production string selection method for oil well development. Background technique [0002] Corrosion is unavoidable in the process of oil well development. It has been plagued by the improvement of the entire economic level of the oil and gas industry, and it is one of the important technical problems that need to be solved in the development process. The production string is the main component of the oil well, and its cost accounts for about 20-30% of the development and production cost of the oil well. With the implementation of water injection in the later stage of oil well development, the water content of the produced fluid continues to rise, and the CO 2 、H 2 S, Cl - It forms a complex corrosion environment with a variety of mineral ions, causing corrosion phenomena such as corrosion perforation, breakage, sulfide stress corrosion cracking...

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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F111/10G06F113/14G06F119/02G06F119/04
Inventor 黄静汪伟光米中荣王键孙振龙张文中武新民曹献平李鑫陈哲徐涛孙宝张亮
Owner CHENGDU NORTH OIL EXPLORATION DEV TECH