Low-permeability fractured reservoir cased hole completion horizontal well water plugging method

Low-permeability fractured reservoir cased hole completion horizontal well water plugging method

  • CN 104,121,000 A
  • Filed: 07/11/2014
  • Published: 10/29/2014
  • Est. Priority Date: 07/11/2014
  • Status: Active Application
First Claim
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1. a Fracture with low permeability oil reservoir casing tube well-completion horizontal well shutoff method, is characterized in that, comprises the following steps:

  • A, with horizontal well water clogging tool, horizontal well water exit interval is separated;

    B, in weight portion, get 100 parts, anti-shearing blocking agent 0.1-10 part and clear water, adopt cementing truck that anti-shearing blocking agent and clear water are mixed after the anti-shearing blocking agent solution of formation;

    C, under 0-90 ℃

    of condition, adopt fracturing unit truck, in conjunction with fracturing blender truck or cementing truck, anti-shearing blocking agent solution is injected to stratum, Plugging Water Zones section;

    D, employing fracturing unit truck, in conjunction with fracturing blender truck or cementing truck fresh water pouring, are crossed and are replaced in anti-shearing blocking agent solution injection stratum with clear water;

    E, closing well are waited solidifying;

    F, the suction that drives a well, by oil field suction standardization program, aspirate operation to oil well.

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