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Preparation method of embedded tracing polymeric microsphere

A tracer and polymer technology, applied in drilling compositions, chemical instruments and methods, luminescent materials, etc., can solve the problems of polymer microsphere migration status, residence time formation plugging validity period cannot be detected, etc. Achieve the effect of improving the application scale and effect

Inactive Publication Date: 2019-07-26
HEBEI HUABEI PETROLEUM TIANCHENG IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention solves the technical problem that the migration status of polymer microspheres in the formation, the residence time, and the validity period of formation plugging cannot be detected.

Method used

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Embodiment Construction

[0034] A method for preparing embedded tracer polymer microspheres, comprising: a step of synthesizing a polymerized fluorescent monomer and a step of preparing an embedded tracer polymer microsphere based on the synthesized polymerized fluorescent monomer; wherein, the internal Embedded tracer polymer microspheres include: embedded tracer polymer microsphere emulsion and embedded tracer polymer microsphere dry powder; specifically,

[0035] (1) The synthesis steps of polymerizing fluorescent monomers include:

[0036] The polymerized fluorescent monomer adopts allyl fluorescein monomer, and its synthesis method is: in a 250ml flask, add 20ml of anhydrous DMF (N,N-dimethylformamide), and then add the following amounts of each substance:

[0037] Silver light: 10mmol;

[0038] 3-bromopropylene: 30mmol;

[0039] Anhydrous potassium carbonate: 30mmol;

[0040] Add a magnetic rotor into the flask, plug the bottle with a glass ground stopper, place it in a magnetic stirrer, sti...

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Abstract

The invention discloses a preparation method of an embedded tracing polymeric microsphere. The preparation method comprises the steps of synthesis of polymeric fluorescent monomers and preparation ofthe embedded tracing polymeric microsphere based on the synthesized polymeric fluorescent monomers, wherein the embedded tracing polymeric microsphere comprises embedded tracing polymeric microsphereemulsion and embedded tracing polymeric microsphere dried powder. The preparation method of the embedded tracing polymeric microsphere solves the technical problem of failure in detection of migration, retention time and formation plugging valid period of polymeric microspheres in formations. Since 2016, the cumulative yield of embedded tracing polymeric microsphere products reaches around 1000 tand achieves an output value of more than 25 million yuan. When applied to multiple oil wells of every oil field block, the embedded tracing polymeric microsphere can achieve profile oil displacement,and meanwhile, when applied to oil field production dynamic monitoring and evaluation, research on oil-water well communication relation, recovery measure improvement and the like, the embedded tracing polymeric microsphere can achieve significant effects and help determine oil-water communication relation of the multiple wells.

Description

technical field [0001] The invention belongs to the technical field of oil recovery, and relates to a method for preparing polymer microspheres for oilfield regulation and displacement, in particular to a method for preparing embedded tracer polymer microspheres. Background technique [0002] With the continuous development of oilfields, oilfield water production has become a common problem in injection and development oilfields. The strong heterogeneity of the reservoir forms large pores, which intensifies the channeling in the injected water layer; intensifies the contradiction between layers, resulting in poor water injection effect. Water plugging and flooding can effectively seal high-permeability layers, but in the late stage of ultra-high water-cut development, due to the limitations of the performance of the plugging and regulating system and other factors, the effect of multiple rounds of regulating and flooding is getting worse. A large number of indoor experiment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F214/16C08F220/58C08J3/12C09K8/588C09K11/06
CPCC08F220/56C08J3/12C08J2333/26C09K8/588C09K11/06C09K2211/14C08F214/16C08F220/585
Inventor 冯金珠高晓龙刘老房刘桂英王长峰王俊新马志魏爱军王彦军
Owner HEBEI HUABEI PETROLEUM TIANCHENG IND GRP CO LTD
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