RU2352753C1 - Method of delivery of equipment into required interval of well - Google Patents

Abstract

FIELD: mining; transporting.

SUBSTANCE: invention is designed for lowering geo-physical apparatus and for supply of process fluid at performing geo-physical works and process operations in wells. The method of delivery equipment into a required interval of a well consists in placement and lowering equipment on a wire or cable, or load carrying capillary pipeline or geo-physical cable along a continuous pipeline of a diameter less, than a diameter of pump-compressor pipes (PCP); the equipment is secured on the exterior surface of PCP. The continuous pipeline is lowered together with PCP, while displacement of equipment in the continuous pipeline is performed due to hydro-dynamic pressure of fluid or gas supplied into the continuous pipeline.

EFFECT: facilitating delivery of equipment into required interval of well of various profile and facilitating changing position of equipment in well in process of operation.

2 dwg

Description

The invention relates to the oil and gas industry and is intended for lowering geophysical instruments and supplying process fluid when performing geophysical work and technological operations in wells.

A device for the dosed supply of chemical reagents into the well [1], including a capillary pipe passing along the outer surface of the tubing, pump unit, cable, at the lower end of which there is a load with centering ribs, and rigidly attached to them.

The disadvantage of this method is the limited number of possible technological operations.

Closest to the claimed (prototype) is a method of repair and research work in the well using cable technology, involving descent on a wire, rope, cable equipment in the required interval of the well [2]. At the same time carry out the descent of equipment for repair, supply of chemicals, well research.

The disadvantages of the prototype are: 1) the complication and often the inability to lower the equipment into directional wells; 2) the impossibility of changing the position of the equipment in the well during its operation, resulting in the need to stop the operation of the well.

The objective of the invention is the delivery of equipment in the required interval of the well during its operation.

The problem is solved in that the method of delivering equipment to the required interval of the well includes placing and lowering the equipment on a wire, or a rope, or a load-bearing capillary pipe, or a geophysical cable through a continuous pipe of a diameter smaller than the tubing fixed on the outer surface of the tubing. The continuous pipeline is lowered together with the tubing, and the equipment is moved in a continuous pipeline due to the hydrodynamic pressure of the liquid or gas supplied to the continuous pipeline.

Figure 1 is a schematic diagram of the implementation of the proposed method for the delivery of equipment to the required interval of the well, figure 2 is a diagram of the descent of the equipment due to the hydrodynamic pressure supplied to a continuous pipeline of liquid or gas, where

1 - casing string;

2 - tubing;

3 - pump unit;

4 - continuous pipeline;

5 - metal belt;

6 - cargo;

7 - equipment;

8 - wire or rope, or load-bearing capillary pipeline, or geophysical cable;

9 - rubber cuff.

The inventive method works as follows.

A tubing 2, a pumping unit 3 and a continuous pipeline 4 rigidly attached to them by metal belts 5 are lowered into the casing 1. The continuous pipeline 4 has a smaller diameter than the tubing and is sufficient for equipment to pass through and is made, for example, in the form of a polymer armored pipeline. A load 6 is suspended at the lower end of the continuous pipeline to allow the continuous pipeline 4 to be lowered below the pump unit 3. Equipment 7 (research, repair, technological) is lowered inside the continuous pipeline 4 on a wire, or a rope, or a load-carrying capillary pipeline, or a geophysical cable 8. Moving equipment 7 in a continuous pipeline 4 during descent is carried out due to the hydrodynamic pressure supplied to the continuous pipeline of liquid or gas, and when lifting due to pulling a wire, or a rope, or a load-bearing capillary pipeline, or a geophysical cable 8 onto a winch. The rubber cuffs 9 seal the space in the continuous pipe 4 and ensure the equipment 7 is moved in the continuous pipe 4, and when the equipment 7 is lifted through the continuous pipe, the rubber cuffs 9 bend in the opposite direction and do not interfere with the lifting of the equipment 7.

In addition, the supply of process fluids is possible through a continuous pipeline.

Thus, the claimed method allows the delivery of equipment at the required interval of the well during its operation.

Information sources

1. Patent 65117 of the Russian Federation, ЕВВ 37/06, 2007.

2. B.C. Krol, A.K. Karapetov. Underground well repair using cable technology. - M .: Nedra, 1985.192 p.

Claims (1)

A method of delivering equipment to the required interval of the well, including placing and lowering the equipment on a wire, or a rope, or a load-carrying capillary pipe, or a geophysical cable, characterized in that, together with the tubing string, a continuous pipe of a smaller diameter than the tubing is parallel and lowered and fixed on the outer surface of the tubing, then the equipment is lowered into a continuous pipeline, and its movement in a continuous pipeline is carried out due to the hydrodynamic pressure supplied to this second fluid or gas pipe.

Images