CN204920892U - Stifled water packer under horizontal well pump - Google Patents

Abstract

The utility model discloses a lower water blocking packer for a horizontal well pump, which comprises a connecting pipe column, an adjusting ring column, an upper joint, a lower joint, a mounting transverse groove, a lower spring cap, an upper spring cap, a compression spring, and an adjusting ring , Seal ring groove, seal ring. The device of the utility model has a simple structure. By adjusting the plugging structure of the horizontal well, a deformable adjusting ring and an outer sealing ring are used for cooperation, and springs are used for support inside, so that irregular well changes can be applied, and multi-section The rings are in contact with each other and can be separated and dislocated for sealing, which completely fits the curved surface at a certain angle, and is easy to use and operate.

Description

A water shutoff packer under a horizontal well pump

technical field

The utility model relates to a water blocking packer under a horizontal well pump, in particular to a water blocking packer under a horizontal well pump which can be adaptively adjusted and multi-section interlacedly connected and sealed.

Background technique

With the continuation of oilfield development time and the development of horizontal well and sidetracking horizontal well drilling technology, the number of sidetracking wells, horizontal well drilling and completion wells is increasing day by day, and the workover of such oil wells has attracted more and more attention. However, conventional packers cannot meet the requirements of horizontal wells and sidetracked horizontal wells at all.

In horizontal wells and sidetracked horizontal wells, due to the friction effect of the casing wall and the large curvature of the working string, the weight of the string cannot act on the existing packer well, resulting in the failure of the packer to set Or the seal is not tight, and once the slips cannot be unsealed, serious downhole accidents will be caused. In addition, although the existing expansion packers and compression packers can be well set in horizontal wells and sidetracked horizontal wells, they do not have a locking mechanism and an unlocking mechanism, and the rubber cartridge will be automatically retracted once the pressure is released , resulting in the sand burial of the packer, affecting the workover operation.

Utility model content

The purpose of the utility model is to provide a water blocking packer under the horizontal well pump aiming at the deficiencies in the prior art.

In order to achieve the above-mentioned purpose, the method adopted by the utility model is: a horizontal well pump lower water blocking packer, including a connecting pipe string, an adjusting ring string, an upper joint, a lower joint, a horizontal groove for installation, a lower spring cap, an upper Spring cap, compression spring, adjusting ring, sealing ring groove, sealing ring; the lower end of the inner ring surface of the connecting pipe string is provided with an internal connection thread for connection, and one end of the adjusting ring string and the connecting pipe string The upper end of the upper end is fixedly connected, and its axis coincides with the axis of the connecting pipe string. The upper joint is fixedly connected to the inner ring surface of the adjusting ring column, and the lower joint is fixedly connected to the inner ring surface of the connecting pipe string. , the installation transverse groove is located on the outer ring cylindrical surface of the adjustment ring column, and the direction of the transverse groove is parallel to the axis direction of the adjustment ring column. The lower spring cap is located in the installation transverse groove, and its outer surface is in contact with the installation transverse groove Connection, the bottom end surface of the upper spring cap is fixedly connected with the inner ring surface of the adjusting ring, the lower end of the compression spring is socketed with the lower spring cap, and the upper end is fixedly connected with the bottom end of the inner groove of the upper spring cap. The adjusting rings mentioned above are sequentially set on the outer ring of the adjusting ring column, and the two are indirectly connected by a compression spring. The sealing ring groove is located in the middle of the outer ring surface of the adjusting ring, and the sealing ring Cooperate with the sealing ring groove, and the outer ring contacts and seals with the horizontal well pipe that needs to be plugged.

Preferably, the width dimension of the installation transverse groove is consistent with the diameter of the outer ring of the lower spring cap.

Preferably, the diameter of the inner ring surface of the adjusting ring is smaller than the diameter of the outermost ring of the connecting pipe string and the upper joint.

Beneficial effect

The device of the utility model has a simple structure. By adjusting the plugging structure of the horizontal well, a deformable adjusting ring and an outer sealing ring are used for cooperation, and springs are used for support inside, so that irregular well changes can be applied, and multi-section The rings are in contact with each other and can be separated and dislocated for sealing, which completely fits the curved surface at a certain angle, and is easy to use and operate.

Description of drawings

Fig. 1 structural representation of the utility model device;

Fig. 2 is a schematic diagram of the side structure of the utility model device;

Among them, 1-connecting column, 2-adjusting ring column, 3-upper joint, 4-lower joint, 5-installation transverse groove, 6-lower spring cap, 7-upper spring cap, 8-compression spring, 9-adjustment Ring, 10-sealing ring groove, 11-sealing ring.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, further clarifies the utility model, and this embodiment implements under the premise of the technical solution of the utility model, and it should be understood that these examples are only used to illustrate the utility model and are not intended to limit the utility model range.

A lower water blocking packer for a horizontal well pump as shown in Figures 1 to 2, including a connecting pipe string 1, an adjusting ring string 2, an upper joint 3, a lower joint 4, a mounting transverse groove 5, a lower spring cap 6, Upper spring cap 7, compression spring 8, adjusting ring 9, sealing ring groove 10, sealing ring 11.

The lower end of the inner ring surface of the connecting pipe string 1 is provided with an internal thread for connection, one end of the adjusting ring string 2 is fixedly connected with the upper end of the connecting pipe string 1, and its axis coincides with the axis of the connecting pipe string 1, and the upper joint 3 and The upper end of the inner ring surface of the adjusting ring column 2 is rotationally and fixedly connected, and the lower joint 4 is rotationally fixedly connected with the lower end of the inner ring surface of the connecting pipe string 1 .

The installation transverse groove 5 is located on the outer ring cylindrical surface of the adjustment ring column 2, and the direction of the transverse groove is parallel to the axis of the adjustment ring column 2. In order to ensure that the installation transverse groove 5 can only follow the groove direction Move, install the width dimension of transverse groove 5 and the outer ring diameter of lower spring cap 6 to be consistent.

The lower spring cap 6 is located in the installation transverse groove 5, and its outer surface is in contact with the installation transverse groove 5. The bottom end surface of the upper spring cap 7 is fixedly connected with the inner ring surface of the adjustment ring 9, and the lower end of the compression spring 8 is connected to the lower spring cap. 6 socket, the upper end is fixedly connected to the bottom end of the inner groove of the upper spring cap 7, and here the upper end connection of the compression spring 8 is set as a fixed connection mainly to ensure the positioning of one end of the spring, and one end of the spring appears when it is compressed or released. escape.

The adjusting ring 9 is sleeved on the outer ring of the adjusting ring column 2 in turn, and the two are indirectly connected by a spring. The diameter of the inner ring surface of the adjusting ring 9 is smaller than the diameter of the outermost ring of the connecting pipe column 1 and the upper joint 3, and the sealing The ring groove 10 is located in the middle of the outer ring surface of the adjusting ring 9, and the sealing ring 11 and the sealing ring groove 10 are fitted together so that the outer ring contacts and seals the horizontal well pipe to be blocked.

Claims (3)

1. a Packer for blocking water under horizontal well pump, is characterized in that: comprise and connect tubing string (1), adjustment annulated column (2), top connection (3), lower contact (4), install translot (5), lower spring cap (6), upper spring cap (7), Compress Spring (8), adjustment annulus (9), closure gasket groove (10), sealing ring (11), the lower end of described connection tubing string (1) inner ring surface connects screw thread in being provided with and connecting, one end of described adjustment annulated column (2) is fixedly connected with the upper end being connected tubing string (1), its axis and the dead in line being connected tubing string (1), described top connection (3) rotates with the inner ring surface upper end of adjustment annulated column (2) and is fixedly connected with, described lower contact (4) rotates with the inner ring surface lower end being connected tubing string (1) and is fixedly connected with, described installation translot (5) is positioned on the outer ring cylinder of adjustment annulated column (2), translot trend is parallel with regulating the axis direction of annulated column (2), described lower spring cap (6) is positioned at installs translot (5), its outer surface is connected with installation translot (5) contact, the bottom face of described upper spring cap (7) is fixedly connected with the inner ring surface of adjustment annulus (9), the lower end of described Compress Spring (8) and lower spring cap (6) socket, upper end is fixedly connected with the inside groove bottom of upper spring cap (7), described adjustment annulus (9) is enclosed within the outer ring of adjustment annulated column (2) successively, indirectly connected by Compress Spring (8) between the two, described closure gasket groove (10) is positioned at the anchor ring centre position, outer ring regulating annulus (9), described sealing ring (11) and closure gasket groove (10) coordinate socket, outer ring with need the horizontal well tube of shutoff and contact sealing.

2. Packer for blocking water under the horizontal well pump of one according to claim 1, is characterized in that: the width dimensions of described installation translot (5) is consistent with the race diameter of lower spring cap (6).

3. Packer for blocking water under the horizontal well pump of one according to claim 1, is characterized in that: the inner ring surface diameter of described adjustment annulus (9) is less than the outmost turns diameter connecting tubing string (1) and top connection (3).