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Sand-proof fiber composite filter body, sand-proof sand-filtering tube and preparation method

A fiber composite, filter body technology, applied in the direction of fluid production, earthwork drilling, wellbore/well components, etc., to achieve uniform pore distribution, good sand control, and good toughness.

Active Publication Date: 2015-03-11
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical defects of sand control in existing sand filter tubes, the present invention provides a fiber composite filter body for sand control and its preparation method, and the invention also provides a sand filter tube assembled with the fiber composite filter body and its preparation method

Method used

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  • Sand-proof fiber composite filter body, sand-proof sand-filtering tube and preparation method
  • Sand-proof fiber composite filter body, sand-proof sand-filtering tube and preparation method
  • Sand-proof fiber composite filter body, sand-proof sand-filtering tube and preparation method

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Experimental program
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Effect test

Embodiment 1

[0046] Embodiment 1: Take 1kg of proppant quartz sand 20-40 mesh (0.42-0.84mm) as an example to prepare a fiber composite filter body

[0047] (1) 2gKH-550, 100g epoxy resin (Guangzhou Dongfeng Chemical Industry Co., Ltd., model E-44 (6101), epoxy value (mol / 100g): 0.41-0.47), 5g hexamethylenetetramine , 10g of dibutyl ester was added successively to the tray containing the sand sample in the ratio of 2:100:5:10, mixed well, air-dried, crushed, and sieved to obtain resin-coated sand (proppant);

[0048](2) Get 0.0225gKH-550 and join in 15g glass fiber and carry out surface treatment; Make the glass fiber of surface treatment, as figure 1 shown.

[0049] (3) Take 15g of surface-treated glass fiber, add it to 1kg of resin-coated sand by blowing air, put it into a mold, heat it at 65°C for 72h, take it out, and cool it to room temperature naturally to obtain a columnar fiber composite filter body ( Such as figure 2 shown).

[0050] Repeat the above operations to prepare 4 a...

Embodiment 2

[0066] Embodiment 2: the fiber composite filter body is assembled into sand control sand filter pipe (such as Figure 4 shown)

[0067] The oil pipe is processed into a center pipe (about 10mm in hole diameter) with an overflow hole; the hollow cylindrical fiber composite filter body (such as image 3 ); put the finished fiber composite filter body on the central tube, cover the flow hole section of the central tube, and weld and fix the two ends with hoops.

[0068] The prepared sand filter tube for sand control is composed of a central tube 1 with flow holes 2 and a fiber composite filter body 3 covered on the central tube; both ends of the fiber composite filter body are fixed on the central tube by fixing pieces 4 On the flow hole section, the two ends of the central tube expose section 5 without holes. structured as Figure 5 shown. The fiber composite filter body is a hollow columnar filter body with a wall thickness of 25-30mm, and the inner diameter matches the oute...

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Abstract

The invention provides a sand-proof fiber composite filter body, a sand-proof sand-filtering tube and a preparation method. The sand-proof fiber composite filter body is prepared from a propping agent coated with a coating and a fiber which is surface-processed by a silane coupling agent through die-filling thermal moulding. The sand-proof sand-filtering tube is composed of a central tube provided with an overflow hole and the fiber composite filter body sleeving the central tube. The fiber composite filter body is fixed on an overflow hole part on the central tube. The invention also provides the preparation method of the fiber composite filter body and an assembling method of the sand-proof sand-filtering tube. The fiber composite filter body is high in strength, is good in flexibility, is good in medium resistance, is uniform in pore distribution, is good in permeability and is good in sand-proof effect.

Description

technical field [0001] The invention relates to an oilfield product, in particular to a fiber composite filter body for sand control, a sand filter pipe and a preparation method. Background technique [0002] Unconsolidated sandstone reservoirs occupy a very important position in my country's oil and gas resources, and sand production from oil wells is the main contradiction in the exploitation of such reservoirs. The sand production of oil wells will inevitably affect the normal production of oil wells. In order to ensure the normal production of oil wells, the research and development of oil well sand control technology is becoming more and more important in the exploitation of unconsolidated sandstone reservoirs. At present, the commonly used sand control technology at home and abroad is mainly gravel packing of wire-wrapped screens, followed by pre-packed wire-wrapped screens and chemically cemented artificial well wall sand control; The protective shell layer, the sand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/02E21B43/08
Inventor 齐宁刘帅吴凯凯
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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