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Publication numberUS3845819 A
Publication typeGrant
Publication dateNov 5, 1974
Filing dateApr 25, 1973
Priority dateApr 27, 1972
Also published asCA988416A1, DE2321237A1
Publication numberUS 3845819 A, US 3845819A, US-A-3845819, US3845819 A, US3845819A
InventorsMourlevat J
Original AssigneeRech Activities Petrolieres En
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Cable tool for setting liners
US 3845819 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

United States Patent 1 [111 3,845,819 Mourlevat I Nov. 5, 1974 I541 CABLE TOOL FOR SETTING LINERS 2.674.314 4 1054 Baker et a1. 166/239 2.923.562 2 1960 B1 II 'l. 3 [75] Inventor; Jean Mourlevat, Cazcrcsr France 2,978,032 4; 1961 i235 4 [73] Assignee: Entreprise de Recherches et 3,130,788 4/1964 Cochran et a1. 166/237 X Petrolieres Paris, l Roark l i X France I Primary Examiner-David H. Brown [22] Flled' 1973 Attorney, Agent, or Firm-Brisebois & Kruger [21] Appl. No.: 354,253

' [57] ABSTRACT [30] Foreign Apphcatlon Pnonty Data This invention concerns a tool for installing various Apr. 27, 1972 France 72.15018 items of equipment in an Oil well by means of a cable comprising a double locking system, which allows the [52] US. Cl. 166/239 too] to be Separated from a tubular item of equipment [51] [11L Cl Ezlb 23/00 such as a liner by converting the downward impulse [58] Fleld of Search 166/237, 238, 239, 243, imparted to a Sleeve by a block dropped from the 166/208 123 face into an upward movement of another sleeve oper- [56] R f Ct d ating the locking system, so that it retracts.

UNI f l 8 This tool is specially designed to lay production liner TE STA ES PATENTS in oil wells by cable. 2,401,119 5/1946 Taylor 166/237 X 2,409,811 10/1946 Taylor et al. 166/193 X 6 Claims, 1 Drawing Figure 16* 24 2/"' 20* 17; E [8 19 4 t5; Sf 74 1E 10 r 1 .3 11 it ER 2/ l l 8 2| 4 1]: 74 4- i i i l CABLE TOOL FOR SETTING LINERS This invention concerns a tool for laying items of equipment by cable, and more specifically for installing production liners at the bottoms of wells.

Various appliances make use of the sand-line cable or a steel wire to set up, shift and withdraw tools needed to bring wells into production, such as valves or plugs. For liners, however, whether or not they are hemetically connected to the well casing, the usual practice is to employ drill pipe, rotated in an anticlockwise direction to separate the laying connector from the liner. It is a long, complex operation to detach the connector, particularly at sea, with a floating rig.

This invention overcomes the drawbacks of this method, by offering a tool which allows liners to be placed in position by means of the sand-line cable on the drilling rig, saving considerable time, particularly at sea, and eliminating the effect of heaving, if the liner is being installed from a floating rig.

This tool for the installation of production liner comprises a non-recoverable connection attached to the liner and containing an internal circular groove, a tool component which fits inside this connector, with an end fitting to which the cable is attached and at least one aperture facing the groove in the connector, a system to lock the tool component to the non-recoverable connector, consisting of a sleeve which moves a locking device through each aperture in the tool component, by sliding inside the component, from a locking position in which the device locks the component to the connector, to an unlocking position, in which the de-' vice retracts, releasing the connector, and a releasable stop blocking this sleeve in the lock position, with means of releasing this stop, thereby releasing the sleeve and allowing it to move into the unlocking position. t In one recommended embodiment, each locking device consists of a ball, which rests on the outer surface of the sleeve when in the locking position, and in the unlocking position fits into a groove on the sleeve.

In this embodiment, the upper end of the tool is surrounded by a casing which slides over the outside of the component during unlocking, thus blocking the apertures and retaining the balls.

According to one feature of this embodiment, the releasable stop consists of one or more balls and an upper sleeve containing a groove, which slides inside the tool component, from a position in which the sleeve is attached to the tool component by a removable connection, and the ball rests on the outer surface of the vsleeve, pressing against a shoulder on the tool component and a seat on the lower sleeve, to a second position in which the ball retracts into the groove on the upper sleeve.

According to another feature of this embodiment, the removable connection between the tool component and upper sleeve consists of a shearing pin.

. According to another feature. the means of releasing the stop consist of a block, guided by the cable and left-hand side of this FIGURE shows a cross section of the tool assembly in the lowering position, and the right-hand side shows it in the raising-position, after the liner has been installed.

On this FlGURE, a non-recoverable connector, (1) with a circular groove (3) on its inner surface, screws on to the strainer (2).

The tool component (4) fits inside this connector, with circular apertures (5) opposite the groove (3), and an end fixture (6), containing a suspension ring (7) in two parts, held in position by a stop ring (9), and by means of which the tool is suspended on the cable (8).

inside the tool component slides a sleeve (10), acted on by a spring (11), the force of which is adjusted by washers (12). This sleeve contains a circular groove (13), and balls (14), in the apertures (5) on the too component press against its outer surface.

The removable stop comprises an upper sleeve (16) containing a circular groove (17), .and balls which press against the outer surface of the upper sleeve, against a shoulder (18) on the tool component, and against a seat (19) consisting of the bevelled inner edge of the end of the lower easing (10).

The upper sleeve (16) is connected to the tool component (4) by a shearing pin (20), and contains a cable guide (21), in two parts, held in place by a stop ring (22).

A casing (23), attached to the non-recoverable connector by means of wires, (not shown here) slides over the outer surface of the tool component until it is halted by a shoulder on the component (24). Its purpose is to retain the balls (14).

A block (25), guided from the surface by the cable (8), strikes the sleeve.(16), breaking the pin (20).

This tool operates as follows;

During lowering, the tool component (4), attached to i the cable (8), is locked to the connector (I) screwed to the liner, by means of balls (14), held in position by the lower sleeve (10). This sleeve is held in the locking position by balls (15), which press against a shoulder (18) on the tool component (4). The pin (20) maintains the whole assembly in the locking position.

When the liner is in position at the bottom of the well, tension is applied to the cable (8), and the block (25) is dropped from the surface. When it comes into contact with the upper sleeve (16), it causes a percussive effect, breaking the pin (20) and causing the sleeve (16) to slide inside the'tool component (4). Consequently, the groove (17 of the sleeve (16) reaches a position facing the balls (15), providing a recess for them, so that they no longer lock the lower sleeve (10) in position. This sleeve, under pressure of the spring (11), slides inside the tool component (4), until the groove (13) is opposite the apertures (5), so that the balls (14) retract, and the connector l) is released, remaining attached to the liner.

The tension-meter on the winch on the surface detects separation of the connector and liner from the tool.

While the cable carrying the tool component is being raised, the casing (23) retaining the balls, drawn by the wires connecting it to the non-recoverable (1), slides along the tool component until stopped by the shoulder (24), blocking the apertures (5) and. thus preventing the balls from falling into the well.

What is claimed is:

tool comprising:

a non-recoverable connector (1) having an internal diameter substantially as great as that of said liner, said connector being formed with an internal circular groove (3);

a recoverable tool component (4) and cable means slidably supporting said recoverable component within said connector, said component having at least one aperture facing the groove in said connector when said tool is fastened to said connector;

means for attaching said tool component to the nonrecoverable connector comprising locking means (14) which project from the apertures in the tool component into said groove when in locking position; and

a main sleeve for moving said locking means into and out of said groove by sliding inside the component between a locking position in which said sleeve holds said locking means in said groove to connect said component to said connector and a release position in which said sleeve permits said locking means to depart from said groove, thus releasing said connector, said main sleeve being supported by and removable with said tool component;

a releasable stop (20) holding said sleeve in its locking position; and

means (25) for releasing said stop.

2. A tool as claimed in claim 1 in which said locking means comprises at least one ball, which rests against the outer surface of the sleeve when in the locking position and fits into a groove in the sleeve when in the unlocking position.

3. A tool as claimed in claim 2 in which the upper end of the tool comprises a casing slidably encircling said tool component, and retained above the connector by a shoulder on the component when said locking means are in locking position but positioned to cover the apertures in said tool component and prevent escape of said at least one ball from said apertures when said locking means are in their release position.

4. A tool as defined in claim 1, in which the releasable stop comprises at least one ball and an additional upper sleeve containing a groove, which upper sleeve is mounted to slide inside the tool component, from a position in which the upper sleeve is attached to the tool component by a releasable connection, and the ball rests on the outer surface of the upper sleeve, pressing against a shoulder on the tool component and against a seat on the main sleeve, to a second position in which the ball retracts into the groove on the upper sleeve.

5. A tool as defined in claim 4 in which the releasable connection between the tool component and upper sleeve consists of a shear pin.

6. A tool as defined in claim 4 in which the means for releasing the stop consists of a block, guided by the cable and adapted to break the releasable connection between the tool component and upper sleeve by striking the upper sleeve.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6065536 *Jan 3, 1997May 23, 2000Weatherford/Lamb, Inc.Apparatus for setting a liner in a well casing
WO1997025518A2 *Jan 3, 1997Jul 17, 1997Arthur Hrrman DybevikApparatus for setting a liner in a well casing
Classifications
U.S. Classification166/239
International ClassificationE21B43/10, E21B33/068, E21B43/02, E21B33/03, E21B31/00
Cooperative ClassificationE21B43/10
European ClassificationE21B43/10