Oil industry wellhead repairing device

A technology of the petroleum industry and key sleeves, which is applied in the field of coiled tubing cut recovery and repair devices, can solve the problems of uncertain formation energy, high formation energy of oil and gas wells, and operation poisoning, so as to increase the liquid output or gas output and avoid self-destructive Effect of spraying or spilling, avoiding large spills

CN111021978AActive Publication Date: 2020-04-17YANCHENG RUIDE PETROCHEM MACHINERY CO LTD
7 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-04-17

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to an oil industry wellhead repairing device. According to the technical scheme, the upper portion of a transition connecting sleeve is connected with an upper pressing cap through connecting bolts, a key sleeve is installed under the upper pressing cap, inner key grooves are formed in the key sleeve, the key sleeve is matched with outer keys of a repairing port jacket through the inner key grooves, the lower portion of the repairing port jacket is provided with T-shaped grooves, the bottom of a repairing port inner die is of a cone structure and provided with multiple gas injection holes, and the repairing port inner die communicates with a one-way valve arranged in an inner cavity of the repairing port inner die through the gas injection holes. The oil industry wellhead repairing device has the beneficial effects that through cooperation of a full gate sealing plate with the transition connecting sleeve, the key sleeve, the repairing port jacket, the repairing port inner die and the upper pressing cap, poisonous gas is effectively controlled, large-amount leakage is avoided, and automatic jetting or overflowing is avoided; and in addition, reaming repairingof a linear notch is achieved, the liquid outlet amount or the gas outlet amount is significantly increased, the problems in existing use of a coiled tubing are solved, and application of the coiled tubing is further promoted.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] The invention relates to a wellhead repair device in the petroleum industry, in particular to a coiled tubing cut restoration repair device. Background technique

[0002] With the continuous development of coiled tubing technology, the development and application of coiled tubing oil production or coalbed methane technology has been promoted. The existing coiled tubing has good flexibility. A coil of coiled tubing is several kilometers long, which can replace conventional tubing for many operations. , Coiled tubing operation equipment has the characteristics of working under pressure, continuous lifting and lowering, the equipment is small in size, the operation cycle is fast, and the cost is low. It is especially suitable for the exploitation of spouting wells. Among them, the coiled tubing four-ram blowout preventer has a pivotal position in coiled tubing operations and belongs to a special wellhead blowout preventer. The existing coiled tubing four-ram b...

Examples

Embodiment 1

[0029] Example 1, see attached Figure 1-3 , The coiled tubing incision restoration repair device mentioned in the present invention, its technical solution is: including repair mouth jacket (7), repair mouth inner mold (8), support spring (9), key sleeve (10), transition sleeve (11) Connecting bolts (12), upper pressure cap (13), check valve sealing steel ball (14), check valve inlet balloon seat (15), among which, the four-gate packer includes four-gate guard The sprayer body (2), half-sealed ram (3), suspension ram (4), shear ram (5), fully-sealed ram (6), coiled tubing (1) is provided in the oil well, and the end A straight cut a for shearing the gate (5). The transitional connecting sleeve (11) is connected with the upper joint (19) of the four-ram blowout preventer through internal threads, and the upper part of the transitional connecting sleeve (11) is connected with the upper pressure cap (13) through the connecting bolt (12), and the upper pressure The key sleeve (1...

Embodiment 2

[0043] In Embodiment 2, the difference between the present invention and Embodiment 1 is that the bottom of the repair port cover (7) can be provided with an L-shaped groove, and the two extruded ends of the in-line incision can still be grasped and then lifted up. At the same time, the conical structure is used to expand and squeeze the incision.

Embodiment 3

[0044] Embodiment 3, the difference between the present invention and embodiment 1 is: the repair port outer shell (7) and the repair port inner mold (8) of the present invention can be provided with a bearing, so that the rotation is easier and the operation is more labor-saving .