Method and system for testing oil-gas-water profile of each section of horizontal well by using environmental protection type tracers

A tracer and horizontal well technology, applied in the direction of earthwork drilling, wellbore/well components, production fluid, etc., can solve the problems of long time period span, hidden danger of formation pollution, large usage, etc., and achieve small evaluation error, No formation pollution effect
CN107989588AActive Publication Date: 2018-05-04ORIENT BAOLIN TECH DEV BEIJING
5 Cites 22 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
ORIENT BAOLIN TECH DEV BEIJING
Publication Date
2018-05-04

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a method and system for testing the oil-gas-water profile of each section of a horizontal well by using environmental protection type tracers. The method comprises the steps that according to information containing the oil and gas reservoir type, the fracturing fluid type and the number of test sections, the kinds and the compositions of the chemical tracers are determined;the designed using quantity, the injection time and the injection velocity of the chemical tracer used at each section are determined; injection equipment of the tracers used for testing is determined, and the connecting process of equipment for completing on-site operation is determined and laid out before construction; injection operation of the corresponding chemical tracers required by construction sections is completed according to the designed pump injection procedure; after fracturing construction of the whole horizontal well is completed, continuous tracer test sampling operation is implemented according to the designed sampling time and frequency, and samples are tested in time after all sampling is completed; and a production profile map or a contribution ratio map of each layersection of the oil and gas reservoir horizontal well within the sampling period is drawn.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method and a system for testing the oil-gas-water profile of each section of a horizontal well by using an environment-friendly tracer, which belongs to the technical field of petroleum exploitation. Background technique

[0002] In recent years, with regard to the research on the effects of staged fracturing of horizontal wells in oil and gas reservoirs, those skilled in the art have always hoped to be able to clarify the effect of each stage of fracturing stimulation through various post-fracture evaluations. Previously, the more common post-fracturing evaluation methods in China are as follows: 1) Evaluate the effect of fracturing by analyzing the construction parameters and process rationality, and optimize the fracturing process, including the type and scale of fracturing fluid and proppant 2) Using microseismic monitoring of fracture distribution and extension state, and estimating the stimulation volume of each stage; ...

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