CN102758612A

CN102758612A - Multi-parameter layered testing method

Info

Publication number: CN102758612A
Application number: CN2012102704325A
Authority: CN
Inventors: 张福连
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-01
Filing date: 2012-08-01
Publication date: 2012-10-31

Abstract

The invention discloses a multi-parameter layered testing method. The method is characterized by comprising the following steps of: a, adding appropriate amount of chemicals in a downhole instrument, conveying the chemicals in a well through the downhole instrument to perform sticky pollution lubrication on a sticky polluted part, and simultaneously, executing basic test in the well by the downhole instrument; b, further adding appropriate amount of chemicals in the downhole instrument, and conveying the chemicals in the well through the downhole instrument to perform accurate test; c, taking the test data of the step a as the supplement and taking the test of the step b as the base to perform comparative calculation and draw a test map, wherein the chemicals are isotopes, the addition in the step a is 0.12L, and the addition in the step b is 0.08L. In the method, the chemicals are added twice for test, in the first basic test, an underground sticky polluted surface is treated by sticky pollution lubrication, the result of the second accurate test is taken as the main calculation basis, since the stick pollution degree is relatively lower in the second test, the test precision is high, the data is reliable and the test environment is close to the true environment, the map is drawn through comparative calculation, accurate basis for dealing with an injection well is provided, and the method has remarkable effect and is suitable for being popularized and applied.

Description

Multi-parameter zonal testing method

Technical field

The present invention relates to a kind of oilfield test method, particularly a kind of multi-parameter zonal testing method realizes accurately measuring through the secondary administration.

Background technology

The fast development of country be unable to do without petroleum-based energy, and under country supports energetically and under the promotion of scientific and technological progress, China's field produces is modernization day by day also; The initial stage of production of some old fileds gold period of oil stream high pressure ejection under the earth's crust mistake; Incident is the introduction and the development of technology of reservoir sweep, and technology of reservoir sweep is that stable yields has been made indispensable contribution, and mainstream technology is water drive and chemical flooding at present; Chemical flooding uses the back to find that its chemical agent exists probabilistic harm and pollution to the stratum through the practice of a period of time; So present less employing chemical flooding, all very prudent during selection, major part has all been selected water drive for use.In the displacement of reservoir oil is produced; Oil production, oil content and efficient all will receive the influence of injecting the well working condition, be according to the suitable treatment measures of down-hole different strata environmental selection, and the improper meeting of treatment measures badly influences oil production; Cause oil content low low with efficient; So want to handle properly letting to inject well work good, permeability parameters that must each aspect of exact grasp down-hole, this just relates to the measuring technology of oil field extensive use; The measuring technology of existing comparative maturity roughly has two kinds; Both conventional isotope injection profile test and the test of neutron oxygen activation, what conventional isotope injection profile test was adopted is once to apply isotope to test, and has pickup and macropore problem; The pickup problem; Produce the abnormal curve amplitude because of pickup on non-perforation layer and the non-water accepting layer; Also there is the pickup amplitude at tubing and casing box cupling place, causes the relative injectivity error, and water accepting layer and non-water accepting layer are hard to tell whether it is true or false; Will miss the oil reservoir that physically well develops and do not employ like this, or miss owing to going out reasons such as sand or perforating depth are not enough and cause that the oil reservoir hole shouts the oil reservoir of obstruction; Macropore problem, each mouthful well all have high relatively water accepting layer, and the isotope particle can get into the depths, stratum very soon along with current on high water accepting layer; Downhole probe does not detect this part isotope; Cause isotopic curves amplitude on this layer very low, even be lower than the low-permeability layer profile amplitude, and high water accepting layer water absorption to account for more than 30% of every mouthful of well total suction; So this conventional intake profile quantitative interpretation error is too big, it can not satisfy the meticulous waterflooding requirement in oil field; Neutron oxygen activation water well test technology so develop again in recent years, this technical know-how science but go wrong easily in the engineering particularly can not be used for chemical flooding.How to improve measuring accuracy, be at present the bottleneck of development, still need measuring technology to improve innovation, to adapt to higher technical requirements.

Summary of the invention

In order to address the above problem the raising measuring accuracy, the present invention provides a kind of multi-parameter zonal testing method, measures through the secondary dosing, makes the test result precision that obtains higher, satisfies the latter period of oilfield development waterflooding requirement that becomes more meticulous.

The technical scheme that the present invention adopts is: a kind of multi-parameter zonal testing method is characterized in that may further comprise the steps:

A, get an amount of medicament and put into downhole probe, and sending into the down-hole through downhole probe, that pickup place in down-hole is carried out pickup is lubricated, downhole probe carries out basic measurement to the down-hole simultaneously;

B, get an amount of medicament again and put into downhole probe, and send into the down-hole through downhole probe and accurately measure;

C, with a step survey data for be aided with b step survey data serve as main compare to calculate to draw measure collection of illustrative plates.

Said medicament is an isotope.

The isotope that said a step adds is 0.12 liter, and the isotope that the b step adds is 0.08 liter.

Said downhole probe comprises high sensitivity flowmeter, natural gamma, sonic sensor and collar locator and the current collecting umbrella of minor diameter flow meter assembly, induction type fluid conductivity assembly, band foldable turbine.

The present invention is through twice adding medicine test, and adding medicine carries out basic test for the first time, the easy pickup aspect in down-hole is carried out pickup lubricate, and this time test result is as auxiliary data, as last contrast basis; Adding medicine is accurately tested for the second time, and this time test result is as at last main basis, and the basic test pickup is lubricated for the first time because the down-hole aspect has been passed through in test this time; So pickup is relatively very low for the second time, measuring accuracy is high, and data are reliable; Near true environment, try to draw collection of illustrative plates after the contrast computing with bigness scale, for injecting the well disposal accurate foundation is provided; A block serves as according to doing the down-hole measure, can reduce well water amount 5%, reducing total injection rate 10% with this technology; Increase oil more than 3%, effect is remarkable, is suitable for applying.

The specific embodiment

This multi-parameter zonal testing method, the branch following steps are carried out:

A, to get isotope be that 0.12 lifting is gone in the downhole probe, and sending into the down-hole through downhole probe, that pickup place in down-hole is carried out pickup is lubricated, and downhole probe carries out basic test to the down-hole simultaneously;

B, to get isotope again be that 0.08 lifting is gone in the downhole probe, and send into the down-hole through downhole probe and accurately measure;

Collection of illustrative plates according to survey data is drawn is implemented underground work; This multi-parameter zonal testing method records data accurately and reliably, for oilfield stable production synergy provides technical support energetically.For the adjustment development plan provides reliable basis.

Claims

1. multi-parameter zonal testing method is characterized in that may further comprise the steps:

2. multi-parameter zonal testing method according to claim 1 is characterized in that said medicament is an isotope.

3. multi-parameter zonal testing method according to claim 2 is characterized in that the isotope that said a step adds is 0.12 liter, and the isotope that the b step adds is 0.08 liter.

4. multi-parameter zonal testing method according to claim 1 is characterized in that said downhole probe comprises high sensitivity flowmeter, natural gamma, sonic sensor and collar locator and the current collecting umbrella of minor diameter flow meter assembly, induction type fluid conductivity assembly, band foldable turbine.