Reservoir protection agent composition, drilling fluid containing reservoir protection agent composition and application thereof

A technology of reservoir protection agent and composition, which is applied in the field of oil drilling, can solve problems such as unsatisfactory protection effect of fractured reservoirs, difficult to accurately grasp the characteristics of reservoir fractures, unsatisfactory temporary plugging effect, etc., to achieve reservoir protection Excellent performance, improved reservoir protection ability, good elasticity and toughness
CN106566484AActive Publication Date: 2017-04-19CHINA UNIV OF PETROLEUM (EAST CHINA) +1
4 Cites 3 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF PETROLEUM (EAST CHINA)
Publication Date
2017-04-19

Smart Images

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

Abstract

The invention relates to the technical field of petroleum drilling and discloses a reservoir protection agent composition, a drilling fluid containing the reservoir protection agent composition and application thereof. The reservoir protection agent composition contains polymer elastic granules, and at least one of synthetic fibre and a film-forming agent. The polymer elastic granules contain specific contents of an intermediate product, alkali, salt and water. The intermediate product is prepared from raw materials including specific contents of acrylamide, a cationic monomer, a cross-linking agent, an initiator, a toughening material and water. The reservoir protection agent composition can help effectively prevent a drilling fluid from invading into a fractured reservoir and rapidly seal fractures in the fractured reservoir. The sealing rate is high, and sealing layer is easy to flow back. The reservoir protection agent composition is simple to use, and has good environmental protection performance and excellent reservoir protection performance.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of petroleum drilling, in particular to a reservoir protection agent composition, a drilling fluid containing the reservoir protection agent composition and applications thereof. Background technique

[0002] Drilling fluid plays an important role in the drilling process, and the performance of drilling fluid determines the success or failure of drilling to a certain extent. Excellent drilling fluid performance is one of the important guarantees to ensure safe, high-quality, efficient and rapid drilling production operations, and it can also effectively protect reservoirs and achieve high oil and gas recovery. During the drilling process, if the performance of the drilling fluid, especially the reservoir protection performance, is not ideal, it will cause the liquid and solid in the drilling fluid to invade the reservoir, reduce the permeability of the reservoir near the wellbore, and increase the resistance...

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