Plugging material with quadrangular pyramid wave absorbing block structure

Abstract

The utility model belongs to the technical field of petroleum and natural gas well drilling bridging plugging and closure, and particularly relates to a quadrangular pyramid wave absorbing block structure plugging material which comprises a body. The body is of a quadrangular pyramid structure; a plurality of protruding blocks are fixedly connected to the side wall of the body. The plurality of convex blocks are arranged in an array; the surface of the body is a friction surface; when well leakage occurs in the drilling process of a petroleum and natural gas well, the body is added into petroleum drilling fluid and injected into an underground leakage layer, the body can be mutually bridged and interlocked, a space grid structure is formed in a leakage channel, underground pores, cracks, karst caves and the like can be filled and blocked, and leakage of the drilling fluid is prevented; due to the mechanical properties, the polyphenylene sulfide can keep a complete structure when bearing mechanical stress such as pressure, so that the bridging, leaking stoppage and closure effects are favorably realized, and the resin can be tightly adhered to the surfaces of various materials to form a firm protection layer.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of oil and gas drilling bridging and plugging and flow interception, in particular to a four-corner pyramid wave -absorbing block structure plugging material. BACKGROUND

[0002] Lost circulation is a phenomenon that working fluid (including drilling fluid, cement slurry, completion fluid and other liquids) flows into the formation under the action of pressure difference (seepage filtration is not included) during various oil engineering operations such as drilling, cementing, testing, completion or workover, which is a complex downhole condition and one of the common technical problems in drilling engineering.

[0003] Lost circulation not only consumes drilling time and loses drilling fluid, but also may cause a series of complex conditions such as sticking, blowout and well collapse, and even leads to wellbore abandonment, causing significant economic losses.

[0004] The four-corner pyramid wave -absorbing block is also called protective block or weak wave stone, which is a large cement block placed at the edge of the coast or river embankment, mainly used for absorbing the impact of sea waves or large water to protect the coast or river embankment, and can play a great role in absorbing the energy of fluid impact.

[0005] In the prior art, when oil occurs lost circulation, the main method is to fill plant fibers, nut shells, grain shells and mineral particles into the well, which consumes a large amount of materials and has not obvious effect, and is easy to cause plugging failure, therefore, the four-corner pyramid wave -absorbing block structure plugging material is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art, the utility model provides a four-corner pyramid wave -absorbing block structure plugging material.

[0007] The utility model discloses a four-corner pyramid wave -absorbing block structure plugging material, including the body, the body is four-corner pyramid structure, the body side wall is fixedly connected with a plurality of convex blocks, a plurality of convex blocks are arrayed, and the body surface is the friction face.

[0008] Preferably, the body material is polyphenylene sulfide, melamine or resin, composite metal or cement.

[0009] Preferably, the body surface coating material is resin.

[0010] The utility model has the advantages of:

[0011] The utility model provides a four angle pyramid wave -absorbing block structure leak stoppage material has structural stability, when the well leakage occurs in the oil and gas well drilling process, the body is added to the oil drilling fluid, injects the stratum, the body can interlock bridging each other, forms the space net rack structure, can fill and block to the underground pore, crack, karst cave etc, prevents the drilling fluid loss.

[0012] The utility model provides a four angle pyramid wave -absorbing block structure leak stoppage material has structural stability, and the melamine body is a kind of thermosetting plastic, has excellent water resistance, heat resistance, these characteristics make melamine can leak stoppage in high pressure or corrosive environment, and the body of polyphenyl sulfide has higher rigidity and strength, and good wear resistance and creep resistance, these mechanical properties make polyphenyl sulfide can keep structural integrity when bearing pressure and other mechanical stress, to help realize the effect of leak stoppage, and the body of resin can form flexible waterproof protective layer, effectively prevent liquid penetration. BRIEF DESCRIPTION OF DRAWINGS

[0013] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the application, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation to the utility model.

[0014] In the drawings:

[0015] Figure 1 It is the perspective view of the utility model;

[0016] Figure 2 It is the perspective view of the body in the utility model.

[0017] Legend:

[0018] 1, body;2, convex block. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be apparently and completely described below in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0020] Specific embodiments are given below.

[0021] Please refer to Figure 1 And Figure 2The utility model provides a kind of four pyramid wave-absorbing block structure plugging material, with structural stability, including body 1;The body 1 is four pyramid structure;The sidewall of body 1 is fixed with multiple convex blocks 2;Multiple the convex block 2 is arrayed arrangement;The surface of body 1 is friction surface;When well leakage occurs in oil well, body 1 is added to drilling fluid in proportion, injects downhole leakage layer, multiple body 1 can be mutually bridged interlocking, form space truss structure in lost circulation channel, can fill and block underground pore, fracture, karst cave etc., prevent drilling fluid loss, the surface of body 1 is friction surface, body 1 when being stacked together can rub, when rubbing, make greater interaction between body 1, interaction makes multiple body 1 when being stacked together can be better mutually bridged interlocking, reduce the gap between multiple body 1, enhance the airtightness of multiple body 1 when being stacked together, form space filling, by setting convex block 2 on 1 surface, when body 1 is mutually contacted, multiple body 1 can be contacted greater friction by convex block 2, by increasing friction, multiple body 1 is tightly stacked together, while convex block 2 can be contacted with lost circulation channel, generate friction by contact, multiple body 1 is connected more firmly by friction.

[0022] Further, as shown in Figure 2 The body 1 is made of polyphenylene sulfide, melamine or resin, composite metal or cement. The melamine body 1 is a thermosetting plastic with excellent water resistance and heat resistance, which enables it to plug and intercept in high-pressure or corrosive environments. The polyphenylene sulfide body 1 has high rigidity and strength, as well as good wear resistance and creep resistance, which enables it to maintain structural integrity under mechanical stress such as pressure, thereby facilitating plugging and interception.

[0023] Further, as shown in Figure 2 The surface of the body 1 is coated with resin. Resin can adhere tightly to the surface of various materials, forming a solid plugging layer that effectively prevents gas or liquid leakage. Additionally, resin has high strength and hardness after solidification, which can withstand certain pressure and impact force, thereby ensuring the durability of the plugging effect.

[0024] Working principle: when the oil well is lost, the body 1 is added to the drilling fluid in proportion, injected into the downhole leakage layer, and the plurality of bodies 1 can be bridged and interlocked to form a spatial grid structure, which can fill and block underground pores, cracks, caves and the like, prevent drilling fluid loss, and the body 1 with a friction surface will rub when stacked together, which will generate greater interaction force between the bodies 1 when rubbing, the interaction force enables the plurality of bodies 1 to be stacked together to better bridge and interlock with each other, reduce the gap between the plurality of bodies 1, enhance the airtightness of the plurality of bodies 1 when stacked together, form spatial filling, and by providing the convex block 2 on the surface of the body 1, the convex block 2 can make the friction force between the plurality of bodies 1 greater when they contact, and by increasing the friction force, the plurality of bodies 1 can be tightly stacked together, and the convex block 2 can contact the leakage channel, generate friction force through contact, and make the plurality of bodies 1 more firmly connected through friction force, the melamine body 1 is a thermosetting plastic with excellent water resistance and heat resistance, and these properties enable melamine to plug and block in high-pressure or corrosive environments, the polyphenylene sulfide body 1 has high rigidity and strength, as well as good wear resistance and creep resistance, and these mechanical properties enable polyphenylene sulfide to maintain structural integrity when subjected to mechanical stress such as pressure, thereby helping to achieve the effect of plugging and blocking, and the resin can tightly adhere to the surface of various materials to form a solid protective layer that effectively prevents gas or liquid leakage, and at the same time, the resin has high strength and hardness after curing, and can withstand certain pressure and impact force, thereby ensuring the durability of the plugging effect.

[0025] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A material for sealing gaps in a structure of tetrapods for wave breaking, comprising a body (1); characterized in that: The body (1) is a quadrangular pyramid structure; a plurality of protruding blocks (2) are fixed to the side wall of the body (1); the plurality of protruding blocks (2) are arranged in an array; and the surface of the body (1) is a friction surface.

2. A material for sealing gaps in a structure of quadrangular pyramid breakwaters according to claim 1, characterized in that: The material of the body (1) is polyphenylene sulfide, melamine or resin, composite metal or cement.

3. The material according to claim 1, wherein: The surface coating material of the body (1) is resin.

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