Pumping unit wellhead oil gathering system and using method

A technology for pumping wells and pumping units, which is used in earth-moving drilling, wellbore/well components, and production of fluids, etc., can solve problems such as low efficiency of drilling wells, cumbersome procedures, and polished rods of oil wells, to prevent liquid The effect of backflow, enhanced oil recovery, and reduced pressure holding work

Inactive Publication Date: 2019-11-15
PETROCHINA CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Aiming at the low efficiency and cumbersome procedures of daily drilling, and the blowout problems caused by oil well backflow and polished rod breakage

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
  • Pumping unit wellhead oil gathering system and using method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] refer to figure 1 , a pumping unit wellhead oil gathering system, comprising

[0041] Pumping unit wellhead 2;

[0042] The wellhead casing 1 of the pumping unit, the wellhead casing 1 of the pumping unit is arranged at the bottom of the wellhead 2 of the pumping unit;

[0043] Natural gas exhaust pipeline 16, the natural gas exhaust pipeline 16 communicates with the wellhead casing 1 of the pumping unit;

[0044] The oil discharge pipeline 15 is connected with the wellhead 2 of the pumping unit, and the oil discharge pipeline 15 is also connected with the production gate 3, and the oil discharge pipeline in the direction of the outlet of the production gate 3 is connected with a single-flow check through the first valve 6. The valve 7 and the oil discharge pipeline in the outlet direction of the single-flow check valve 7 are also connected in parallel with an oil discharge pipeline and a vent pipeline 17;

[0045] A sampling pipeline 20, the sampling pipeline 20 is ...

Embodiment 2

[0050] Compared with Embodiment 1, the difference of this embodiment is that the described oil outlet pipeline includes a single volume oil discharge pipeline 18 and a mixed oil discharge pipeline 19, and the single volume oil discharge pipeline 18 and the mixed oil discharge pipeline 19 respectively pass through The second valve 12 and the third valve 13 are connected to the oil discharge line 15 in the outlet direction of the single-flow check valve 7, and the second pressure gauge 8 is connected between the single volume oil discharge line 18 and the mixed oil discharge line 19 on the drain line 15 between them.

[0051] Preferably, the single-quantity oil discharge pipeline 18 and the mixed oil discharge pipeline 19 are respectively connected to both sides of the second pressure gauge 8, and the single-quantity oil discharge pipeline 18 is connected between the single-flow check valve 7 and the second pressure gauge 8 On the oil drain line 15 between, the vent line 17 is c...

Embodiment 3

[0055] Compared with Embodiment 2, the difference of this embodiment is that: the inner diameter of the back pressure single volume valve 11 and the back pressure mixing valve 10 is DN50mm gate, and the inner diameter of the vent gate 9 is DN15mm gate.

[0056] In actual use: the inner diameter of the back pressure single volume valve 11 and the back pressure mixing valve 10 is a DN50mm gate, so that the calibers of the single volume oil discharge pipeline 18 and the mixed oil discharge pipeline 19 match in actual use, which is the airtightness of the entire pipeline Better, can not leak oil, and the internal diameter of venting gate 9 is DN15mm gate, makes in actual use match with the caliber of venting pipeline 17, makes pipeline airtightness good.

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 relates to the technical field of exploitation of rod-pumped wells in an oil field, in particular to a pumping unit wellhead oil collecting system and a using method. By giving full playto the structural function of a single-flow check valve, through cooperation with two pressure gauges separately installed at an inlet and an outlet of the single-flow check valve and through cooperation of a sampling valve installed at the inlet of the single-flow check valve, the pumping unit wellhead oil collecting system can realize the following functions after installation: 1, liquid is prevented from flowing backward to a wellbore; 2, produced liquid is prevented from flowing back, and the recovery factor is improved; 3, the pressure gauges installed at the inlet and the outlet of thesingle-flow check valve can compare the pressure difference in real time, the inlet pressure is slightly higher than the outlet pressure in a normal liquid producing well, the inlet pressure is lowerthan the outlet pressure in a well not producing liquid, and on-site inspection personnel can intuitively judge the liquid output of the well without building the pressure; and 4, the sampling valve is installed at the inlet of the single-flow check valve, direct sampling can be achieved without closing a back pressure gate, the operation risks of false samples and pressure building are eliminated, and meanwhile, production of ground crude oil is reduced.

Description

[0001] Technical field [0002] The invention relates to the technical field of pumping well exploitation in oil fields, in particular to an oil collection system at the well head of a pumping unit and a method for using it. Background technique [0003] At present, there are many deficiencies in the process of wellhead extraction by pumping units commonly used in oil fields. First, the operators cannot visually judge the fluid flow of the oil well, and need to judge the pressure by switching the gate. The operation time is long, and the sampling time is long. Regular sampling needs to be taken three times, at least It is necessary to open and close the back pressure gate and sampling gate three times. If the oil pipe is full of gas or the oil is thick in winter, the number of sampling will be more, at least 5-10 minutes, and more dead oil will be generated in sampling and venting. Each well produces about half a barrel, which is recycled in plastic woven bags. There are certa...

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): E21B33/03E21B43/00
CPCE21B33/03E21B43/12
Inventor 梁虎陈玉龙张天杰王延廷
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap