CN202755947U - Well completion sand prevention sliding sleeve - Google Patents

Abstract

The utility model relates to a well completion sand prevention sliding sleeve which comprises a body provided with filling holes. The well completion sand prevention sliding sleeve is characterized in that a sliding jaw matched with the body in an axial reciprocating motion mode and a limit ring connected through threads are installed in the body, one end face of the limit ring is provided with a releasing shoulder matched with a switch tool and a closing tool, the outer wall of the upper end of the sliding jaw and the outer wall of the lower end of the sliding jaw are both provided with self-locking shoulders, the inner wall of the other end of the body is provided with a releasing shoulder matched with the switch tool and the closing tool, and a plurality of seal rings are further arranged between the body and the sliding jaw. The well completion sand prevention sliding sleeve has the advantages that the sliding sleeve and the switch tool and the closing tool used in a matched mode enable opening and closing operation to be reliable and stable in the sand prevention operation process, effective opening and closing of the sliding sleeve can be achieved more than once, effective service life is long, self-locking capacity of opening and closing states of the sliding sleeve is high, and mis-opening in tripping-in of tubular columns can be prevented; and the well completion sand prevention sliding sleeve can achieve the function of the sliding sleeve when used with the closing tool in a matched mode, and the sliding sleeve is simple in structure, convenient to operate and low in manufacturing cost.

Description

The completion and sand control sliding sleeve

Technical field

The utility model belongs to the oil field development production technical field, particularly relates to a kind of completion and sand control sliding sleeve.

Background technology

In present known oil field development, along with increasing of deep-well, Holes of Complicated Wells drilling exploitation, the especially improvement of well-completing process is had higher requirement to function and the use of completion tool.Sliding sleeve and switch thereof, closing tool are sand preventing tools necessary in the gravel filling sand prevention operation, yet the effective opening and closing that realize sliding in the sand control treatment process are the keys that guarantee that sand control treatment is finished smoothly, meanwhile, assurance slides over and remains in later stage steel wire operation or the production operation that closed condition is the success or failure that determine this well sand control.Though the sliding sleeve of various structures and the service aid that matches are arranged in the present completion tool, but find the less reliable of its work according to the effect of the field, exist sliding sleeve to close or sliding sleeve mistake such as opens at the operating risk, and can't satisfy serial sand preventing tool test the sliding sleeve function, and sliding sleeve and service aid complex structure, sand card phenomenon easily occurs, therefore cause existing sliding sleeve and service aid thereof sand control treatment inefficacy equivalent risk can occur, increases simultaneously the operation easier of Holes of Complicated Wells sand control treatment.

Summary of the invention

The utility model provides and utilizes the reciprocal opening and closing function of elastic claw winding machine sliding sleeve, simple in structure, convenient operation and safe and reliable completion and sand control sliding sleeve in a kind of oilfield development process for solving the technical problem that exists in the known technology.

The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:

The completion and sand control sliding sleeve, comprise the body that is shaped with pack hole on it, it is characterized in that: be equipped with in the described body with it and be the sliding jaw that axially reciprocating cooperates and the spacing ring that is threaded connection, described spacing ring one end face is shaped with the release shoulder that matches with switching tools, closing tool, described sliding jaw all is shaped with the self-locking shoulder on the outer wall of two ends up and down, be shaped with the release shoulder that cooperates for switching tools, closing tool on the described body other end inwall, also be provided with a plurality of sealing rings between described body and the sliding jaw.

The utility model can also adopt following technical scheme:

Described sliding jaw is shaped with the driving shoulder that matches with switching tools, closing tool near on the inwall at both ends.

Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme, can satisfy the various functions of the existing required sliding sleeve of sand control treatment on Functional Design fully, what possessed again each serial sand control treatment simultaneously tests the sliding sleeve function.On structure design, by being designed with three groups of elastic claw mechanisms in sliding sleeve and the switching tools that is used in conjunction with thereof, the closing tool, switch, closing tool can drive sliding jaw and back and forth endwisely slip to realize effective unlatching of sliding sleeve or close in sliding sleeve, can not miss because colliding with sliding jaw when simultaneously spacing ring also can guarantee to be lowered to other completion tool after sand control treatment finishes again and open sliding sleeve, and can satisfy serial sand preventing tool test the sliding sleeve function; This shift sleeve structure is simple, reliable operation, not only can avoid occuring sand card phenomenon and sand control treatment inefficacy equivalent risk occurs, and low cost of manufacture, has simplified the operation easier of Holes of Complicated Wells sand control treatment.

Description of drawings

Fig. 1 is the structural representation in the utility model;

Fig. 2 is the switching tools structural representation that uses in the utility model operation process;

Fig. 3 is the closing tool structural representation that uses in the utility model operation process.

Among the figure: 1, body; 1-1, release shoulder; 2, pack hole; 3, spacing ring; 3-1, release shoulder; 4, sliding jaw; 4-1, self-locking shoulder; 4-2, driving shoulder; 5, O-ring seals; 6, switching tools, 6-1, switch elastic claw; 6-2, execute shoulder; 7, closing tool; 7-1, close elastic claw; 7-2, execute shoulder.

The specific embodiment

For further understanding summary of the invention of the present utility model, Characteristic, hereby exemplify following examples, and cooperate accompanying drawing to be described in detail as follows:

See also Fig. 1, the completion and sand control sliding sleeve comprises the body 1 of establishing pack hole 2 on it, and the sliding jaw 4 that is with it axially movingly and the spacing ring 3 that is threaded connection are housed in the described body, and described spacing ring one end face is shaped with and discharges shoulder 3-1.Described sliding jaw is shaped with the self-locking shoulder 4-1 that matches with closing tool on the outer wall of two ends about in the of 4, be shaped with the release shoulder 1-1 that cooperates for switching tools, closing tool on the described body other end inwall.Between body and sliding jaw, also be provided with a plurality of O-ring seals 5.Described sliding jaw is shaped with the driving shoulder 4-2 that matches with switching tools, closing tool near on the inwall at both ends.

API standard button-type or american standard screw thread are all adopted in the upper lower contact of described completion and sand control sliding sleeve and switching tools 6 thereof, closing tool 7, are convenient to like this being connected of new tool and other instrument.

Operating principle of the present utility model is:

See also Fig. 1-Fig. 3, sliding sleeve connects up and down the outer tubing string of sand preventing tool, closing tool 7 is connected with switching tools and is connected the sand preventing tool service tube-column, in order in sand control treatment, to realize testing the sliding sleeve function, require the closing tool 7 in the service tube-column should be connected to switching tools 6 tops, and closing tool 7 should be higher than switching tools 6 certain distances.

The driving shoulder 4-1 that shoulder 6-2 hooks sliding sleeve sliding jaw 4 that executes as switching tools switch elastic claw 6-1, sliding jaw namely moves downward to pack hole 2 fully open positions under switching tools drives, and keep certain self-locking state, the shoulder 7-2 that executes that closes elastic claw 7-1 when closing tool hooks driving shoulder 4-2 on the sliding sleeve sliding jaw, sliding jaw 4 namely moves up to complete fastening position under the drive of closing tool, the simultaneously release shoulder 3-1 of spacing ring 3 extruding is closed elastic claw 7-1 and is retracted, the sliding jaw 4 of closing elastic claw and sliding sleeve is broken away from smoothly, the self-locking shoulder 4-1 that sliding sleeve opens or closes the rear dependence sliding jaw two ends that put in place keeps the stable of two states, prevents that colliding with of subsequent job from causing the sliding sleeve mistake to open inefficacy.

After whole sand control treatment cobblestone packing job finishes; on carry service tube-column to closing tool and pass through sliding sleeve; realize the closing motion of sliding sleeve; then transfer service tube-column to testing the sliding sleeve position; namely can suppress the check sliding sleeve and whether close, realize testing the sliding sleeve function, guarantee that sliding sleeve is closed smoothly after; on carry service tube-column to closing tool, switching tools all by sliding sleeve, namely guaranteed to slide over and closed smoothly after sand control treatment finishes.

Claims (2)

1. completion and sand control sliding sleeve, comprise the body that is shaped with pack hole on it, it is characterized in that: be equipped with in the described body with it and be the sliding jaw that axially reciprocating cooperates and the spacing ring that is threaded connection, described spacing ring one end face is shaped with the release shoulder that matches with switching tools, closing tool, described sliding jaw all is shaped with the self-locking shoulder on the outer wall of two ends up and down, be shaped with the release shoulder that cooperates for switching tools, closing tool on the described body other end inwall, also be provided with a plurality of sealing rings between described body and the sliding jaw.

2. completion and sand control sliding sleeve according to claim 1 is characterized in that: be shaped with the driving shoulder that matches with switching tools, closing tool on the close inwall at both ends of described sliding jaw.