CN221546918U - Casing wellhead fixing tool for well cementation engineering - Google Patents

Abstract

The utility model discloses a casing wellhead fixing tool for well cementation engineering, which relates to the field of casing wellhead fixing tools for well cementation engineering and comprises a bottom shell, wherein six moving grooves are formed in the bottom shell and annularly distributed in the bottom shell, clamping grooves are formed in the inner wall of the bottom shell and annularly distributed in the inner wall of the bottom shell, the clamping grooves are positioned at the front end of the moving grooves, a moving block is arranged in the bottom shell and annularly distributed in the moving grooves in the bottom shell, a clamping block is arranged at the front end of the moving block and positioned in the clamping groove, anti-skidding lines are arranged at the front end of the clamping block, a plurality of front ends of the clamping blocks are distributed in the anti-skidding lines, a push rod is arranged at the rear end of the moving block, a first screw hole is formed in the top of the bottom shell, and six clamping grooves are annularly distributed at the top of the bottom shell.

Description

Casing wellhead fixing tool for well cementation engineering

Technical Field

The utility model relates to the field of casing wellhead fixing tools for well cementation engineering, in particular to a casing wellhead fixing tool for well cementation engineering.

Background

Long radius horizontal wells and some medium radius horizontal wells may be cased for cementing. A major problem in horizontal well casing design is whether the casing safely traverses a curved wellbore section.

And calculating various resistances in the process of casing running. The resistance in the casing running process mainly consists of two parts, one is determined by the borehole condition through the local resistance in sharp bend, and the main influencing factor is the maximum full angle change rate of the well; and the friction between the sleeve and the well wall is determined by the gravity of the sleeve corresponding to the horizontal displacement length and the friction coefficient between the sleeve and the well wall. Whether the sleeve can be smoothly lowered depends on whether the self gravity (floating weight) of the sleeve is larger than the resistance of the two parts. When the casing is put into the casing by gravity, the horizontal well displacement can reach 600m in the well-drilling oil field, the vertical depth is 1900m, and the casing can be put into the well smoothly. The length of the horizontal section can be greatly increased by increasing the axial downward pressure by using the ground anchor. The casing is lowered to the designed well depth at one time, which is a precondition of well cementation construction, and theoretical design and simulated well dredging technology are adopted before the casing is lowered in Sichuan, so that the well cementation engineering well solves the problems of casing lowering and cement injection.

At present, when geological drilling well cementation, when the fixed tool of the casing wellhead is fixed, the casing is hung by using a steel wire rope, so that the operation is troublesome, the fixing effect is poor, and the injury and death of people can be generated due to the breakage of the steel wire rope.

The prior Chinese patent is searched: a cased hole project (publication number: CN 214997543U) for a well cementing project comprising: two opposite clamping rings, wherein the two clamping rings are spliced into a fixed ring; and one ends of the two first fixed ring pieces are fixedly connected with one surface of the inner ring wall of the clamping ring respectively, and the sleeve is fixed by contacting the two first fixed ring pieces with the outer wall of the sleeve. The casing well engineering can conveniently engineer the casing well, and is convenient for cementing and cement solidification operation.

The above patent can facilitate the engineering of cased wells and the cementing and cement setting operations, but the wellhead is provided with projections which can affect the reliability of the equipment in the process of fixing, further, the above-mentioned patent is not very firm by only fixing the casing wellhead fixing tool through the anti-slip layer, so that it is necessary to invent a casing wellhead fixing tool for well cementation engineering to solve the above-mentioned problems.

Disclosure of utility model

The utility model aims to provide a casing wellhead fixing tool for well cementation engineering, which is used for solving the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a sleeve pipe well head fixing tool for well cementation engineering, includes the drain pan, the inside of drain pan has been seted up and has been removed the groove, it is the inside that distributes at the drain pan to remove the groove to have six, the draw-in groove has been seted up to the inner wall of drain pan, the draw-in groove has six to be the inner wall that distributes at the drain pan, the draw-in groove is located the front end of removing the groove, the internally mounted of drain pan has the movable block, the movable block has six to be the annular and distributes in the inside removal groove of drain pan, the front end of movable block is provided with the fixture block, the fixture block is located the inside of draw-in groove, the front end of fixture block is provided with the anti-skidding line, the anti-skidding line has a plurality of front ends that distribute at the fixture block, the rear end of movable block is provided with the push rod, first screw has been seted up at the top of drain pan, six of first screw are the annular and distribute at the top of drain pan.

Preferably, a fixing ring is installed at the top of the bottom case.

Preferably, the inside of fixed ring has seted up the second screw, the second screw has six to be annular and distributes in the inside of fixed ring.

Preferably, bolts are installed in the first screw holes and the second screw holes.

Preferably, the top of the fixing ring is provided with a conical top cover.

Preferably, a fixed block is arranged at the top of the conical top cover.

Preferably, a round hole is formed in the fixing block.

The utility model has the technical effects and advantages that:

1. Through setting up fixed block, round hole, push rod, movable block and fixture block, fix the apparatus on the loop wheel machine through the round hole of top fixed block, then overlap the apparatus on the well head, push the push rod, advance the fixture block forward through the movable block, until the fixture block clamps in the lug bottom of the well head, then clamp other fixture blocks in proper order, can be quick fix the apparatus on the well head;

2. Through setting up fixture block and push rod, alright fixed with the well head, the promotion through the loop wheel machine then drives equipment and reciprocates, and the fixture block can drag the well head, because the gravity of well head self pushes down on the fixture block, can prevent that the fixture block from pushing off, after the work is accomplished, moves down equipment, is pulling out the push rod, alright let the fixture block drop the well head, fixed well head that can be firm, can also take off equipment fast.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of a casing wellhead fixing tool for well cementation engineering.

Fig. 2 is a schematic view showing the bottom view structure of a casing wellhead fixing tool for well cementation engineering.

Fig. 3 is a schematic diagram of an explosion structure of a casing wellhead fixing tool for well cementation engineering.

Fig. 4 is an exploded bottom view schematic of a casing wellhead fixing tool for well cementation engineering according to the present utility model.

In the figure: 1. a bottom case; 2. a moving groove; 3. a clamping groove; 4. a moving block; 5. a clamping block; 6. anti-skid lines; 7. a push rod; 8. a first screw hole; 9. a fixing ring; 10. a second screw hole; 11. a bolt; 12. a conical top cover; 13. a fixed block; 14. and a round hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a casing wellhead fixing tool for well cementation engineering, as shown in figures 1-4, comprising a bottom shell 1, wherein the bottom shell 1 can be used for fixing a wellhead, a movable groove 2 is arranged in the bottom shell 1, six movable grooves 2 are annularly distributed in the bottom shell 1, six movable blocks 4 can be arranged in the bottom shell 1 through the movable groove 2, and the movable blocks 4 can move in the bottom shell 1, a clamping groove 3 is arranged in the inner wall of the bottom shell 1, the clamping groove 3 is annularly distributed in the inner wall of the bottom shell 1, six clamping blocks 5 can be clamped in the inner wall of the bottom shell 1 through the clamping groove 3, the clamping groove 3 is positioned at the front end of the movable groove 2, the movable blocks 4 are arranged in the bottom shell 1, the movable blocks 4 are annularly distributed in the movable grooves 2 in the bottom shell 1, six anti-skid patterns 6 are arranged at the front end of the clamping block 5 and distributed at the front end of the clamping block 5, a push rod 7 is arranged at the rear end of the moving block 4 and can be used for driving the moving block 4 to move, a first screw hole 8 is formed in the top of the bottom shell 1, six first screw holes 8 are distributed at the top of the bottom shell 1 in an annular mode and pass through the first screw hole 8, six anti-skid patterns 6 are distributed at the top of the bottom shell 1 in an annular mode, the bolts 11 may be internally installed.

The top of the bottom shell 1 is provided with a fixing ring 9, wherein a conical top cover 12 can be arranged at the top by the fixing ring 9 being arranged at the top of the bottom shell 1.

The second screw holes 10 are formed in the fixing ring 9, six second screw holes 10 are distributed in the fixing ring 9 in an annular mode, and bolts 11 can be installed in the fixing ring.

The first screw hole 8 and the second screw hole 10 are internally provided with bolts 11, wherein the fixing ring 9 can be fixed at the top of the bottom case 1 by the bolts 11 installed inside the first screw hole 8 and the second screw hole 10.

The top of the fixing ring 9 is provided with a conical top cover 12, wherein the conical top cover 12 is arranged on the top of the fixing ring 9, and the stability of the equipment can be better controlled through the conical design.

The top of the conical top cover 12 is provided with a fixing block 13, wherein the device can be fixed by the fixing block 13 being provided on the top of the conical top cover 12.

The inside of the fixed block 13 is provided with a round hole 14, wherein the round hole 14 is arranged in the fixed block 13 and can be used for installing equipment on a crane.

Working principle: firstly, the fixing ring 9 is arranged at the top of the bottom shell 1, the first screw hole 8 and the second screw hole 10 are opposite to each other, then the bolts 11 are used for fixing, then the equipment is fixed on a crane through the round holes 14 of the top fixing blocks 13, then the equipment is sleeved on a wellhead, the push rod 7 is pushed, the clamping blocks 5 are pushed forward through the moving blocks 4 until the clamping blocks 5 are clamped at the bottom of a bump of the wellhead, then other clamping blocks 5 are sequentially clamped, the wellhead can be fixed, then the lifting of the crane is carried out, the equipment is driven to move upwards, the clamping blocks 5 can drag the wellhead, the gravity of the wellhead presses down on the clamping blocks 5, the clamping blocks 5 can be prevented from being pushed down, after the work is completed, the equipment is moved downwards, the push rod 7 is pulled outwards, and the clamping blocks 5 can fall off the wellhead.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. Casing wellhead fixing tool for well cementation engineering, comprising a bottom shell (1), and being characterized in that: the inside of drain pan (1) has been seted up and has been removed groove (2), it has six to be the inside that the annular distributes in drain pan (1) to remove groove (2), draw-in groove (3) have been seted up to the inner wall of drain pan (1), draw-in groove (3) have six to be the inner wall that the annular distributes in drain pan (1), draw-in groove (3) are located the front end of removing groove (2), internally mounted of drain pan (1) has movable block (4), movable block (4) have six be the annular and distribute in drain pan (1) inside remove groove (2), the front end of movable block (4) is provided with fixture block (5), fixture block (5) are located inside draw-in groove (3), the front end of fixture block (5) is provided with anti-skidding line (6), the rear end of movable block (4) is provided with push rod (7), first (8) have been seted up at the top of drain pan (1), first screw (8) have at the top of six annular distributions.

2. A casing wellhead setting tool for use in well cementing projects as claimed in claim 1, wherein: the top of the bottom shell (1) is provided with a fixing ring (9).

3. A casing wellhead setting tool for use in well cementing projects as claimed in claim 2, wherein: the inside of fixed ring (9) has seted up second screw (10), second screw (10) have six to be annular and distribute in the inside of fixed ring (9).

4. A casing wellhead setting tool for use in well cementing projects as claimed in claim 1, wherein: the first screw hole (8) and the second screw hole (10) are internally provided with bolts (11).

5. A casing wellhead setting tool for use in well cementing projects as claimed in claim 2, wherein: the top of the fixed ring (9) is provided with a conical top cover (12).

6. A casing wellhead fixation tool for use in well cementing projects as claimed in claim 5, wherein: the top of the conical top cover (12) is provided with a fixed block (13).

7. A casing wellhead fixation tool for use in well cementing projects as claimed in claim 6, wherein: a round hole (14) is formed in the fixing block (13).