CN203871056U - Numerical control reciprocating electric submersible pump special cable - Google Patents

Abstract

Provided is a numerical control reciprocating electric submersible pump special cable, comprising three metal conductors, insulating layers, filling temperature resistant layers, and a piping outfitting layer. The cable is characterized in that the high temperature resistant insulating layers are disposed out of three metal conductors, the filling temperature resistant layers are disposed out of the temperature resistant insulating layers, the three metal conductors which are in equal diameter and have smooth surface are arranged parallelly, and the metal piping outfitting layer which is flat integrally is disposed on the outermost of the cable. The flat metal piping outfitting layer is sealed through prolonged straight slit welding, and is formed by reeling. Since an original flat submersible power cable armouring method is changed, and an overall longitudinal wrapping structure is used, the whole cable stresses on the longitudinal direction. Even though a numerical control reciprocating electric submersible pump vibrates up and down in operation, the cable would not droop and extend, would not gather and knot, and the insulating layers would not be damaged. Thus, the cable fundamentally put an end to cable damages caused by drooping of the power cable, the drooping of the cable influences maintenance operation. The surface of the cable is smooth without concavo-convex shape, and is easy to enter an oil well annular space straightly in underground operation.

Description

Numerically controlled reciprocating submersible pump private cable

Technical field

The utility model belongs to the supporting specialized power cable of a kind of oil-immersed pump matching used cable, particularly numerically controlled reciprocating submersible pump.

Technical background

At present, through on-the-spot practical application for many years and constantly perfect, reciprocating submersible electric pump (Chinese utility model patent number: ZL 2,004 1 0050431.5) is obtained extraordinary achievement in oil recovery machiner field at home and abroad, it has the features such as simple in structure, energy-conserving and environment-protective, easy to operate, online tune ginseng/remote monitoring, thoroughly solves a difficult problem for de-, the disconnected and side-abrasion of rod string of the sucker rod of long-term puzzlement mechanical oil recovery both at home and abroad.This product is alternative original oil production method not only, is also highly suitable for the exploitation of horizontal well, directional well, low permeability pay well.But through long-term scene application, expose the problem such as insulating barrier damage, electric leakage of the supporting power cable of numerically controlled reciprocating submersible pump, restricted numerically controlled reciprocating submersible pump pump detection period short; Rate while impact, because the power cable supporting with it damages, causes playing well servicing operation, not only greatly reduces pump detection period, and plays well servicing operating cost at every turn and also need approximately 100,000 yuan of left and right.

Therefore,, from the oily power cable technical matters analysis of diving at present, the oily power cable of diving can be divided into two kinds of circular and flats.Be subject to the restriction of oil well casing small space, the oily power cable of conventionally diving is taking flat as main.The latent chain steel-tape armouring of oily power cable armour of flat at present, play a radial force effect, longitudinally only depend on three wires stressed, its armour adopts steel band to be radially wound around, contact point is lapping state, it is concavo-convex that surface becomes, when it and numerically controlled reciprocating submersible pump is supporting while going into the well, concavo-convex appearance easily and oil pipe friction, cause often occurring the displacement of armour lapping place, cause insulating barrier exposed, lose the protection of armour skin, because subsurface environment is extremely complicated, high temperature, high pressure, and contain gas and multiple corrosive deposit, cause cable insulation to become balloon-like, until explosion, cause the oily power cable naked of diving.

The oily power cable of diving is gone into the well in construction operation and is all adopted electric cable protector to fix with every two oil pipe junctions, and even oil pipe middle part is also added with protector, even so, due to radially armouring of armour, also there will be the displacement of armour lapping place, the situation of sagging extension.

Secondly because numerically controlled reciprocating submersible pump work has vertical tremor; long-term work; supporting latent oily power cable armour is because of without longitudinal stress protective effect with it; the displacement of oily power cable armour lapping place causes diving; sagging extension, gathers knot heap, with the contact friction of oil well casing inwall; make internal insulating layer wear-out failure, cause the oily power cable naked of diving to play well servicing operation.Therefore research and develop a kind of numerically controlled reciprocating submersible pump private cable, solve the matching used power cable long-term work of numerically controlled reciprocating submersible pump because of its armour lapping place displacement, sagging extension, gathers knot heap, insulating barrier wear-out failure and play the problem of well servicing operation.

Utility model content

The purpose of this utility model is to provide a kind of numerically controlled reciprocating submersible pump private cable, eliminates original cable sheath lapping place displacement, and knot heap is gathered in sagging extension, insulating barrier wear-out failure and play the problem of well servicing operation.Make that private cable can be safe and reliable in high temperature, high pressure and high corrosion particular surroundings under oil well by electrical energy transfer to numerically controlled reciprocating submersible pump.

The purpose of this utility model is achieved by the following technical solution: comprise three plain conductors, insulating barrier, filling heat-resistant layer, pipe dress layer, it is characterized in that: three plain conductor external diameters are respectively equipped with temperature-resistant insulation layer, be provided with filling heat-resistant layer outward at temperature-resistant insulation layer, three plain conductors isometrical and smooth in appearance are arranged in parallel, most external arranges overall flat metal tube dress layer, and flat metal tube dress layer is by extending straight seam welding sealing.

Above-mentioned insulating barrier is selected high-temperature resistant polytetrafluoroethylmelt material; Fill heat-resistant layer and select glass fiber material; Pipe dress layer is stretch-proof, high corrosion resistant metal material.

Good effect of the present utility model: 1, because the utility model has changed the latent oily power cable armouring mode of original flat, adopt longitudinally packaging type structure of entirety, its overall longitudinal stress machinery-free is extended, even vertical tremor when numerically controlled reciprocating submersible pump work, can not cause the sagging extension of cable yet, gather knot heap, fundamentally stopped to beat because power cable is sagging pendant and caused cable to damage well servicing operation.2, the utility model product surface is smooth, and no concave-convex shape easily directly enters oil well annular space when at lower well operations.

Brief description of the drawings

Fig. 1 is the utility model entirety vertical view.

Fig. 2 is the utility model cross sectional representation.

Embodiment

See Fig. 1,2, select three isometrical and smooth surface plain conductors 5, outer surface is provided with temperature-resistant insulation layer 4, and temperature-resistant insulation layer 4 is selected high-temperature resistant polytetrafluoroethylmelt material; Make plain conductor 5 and high temperature, the isolation of high-pressure well liquid.Temperature-resistant insulation layer 4 outer surfaces are provided with fills heat-resistant layer 3, fills heat-resistant layer 3 and selects glass fiber material; Better protection temperature-resistant insulation layer 4, prevents that temperature-resistant insulation layer 4 from damaging.By three parallel placements of plain conductor, adopt the longitudinal packaging method of entirety to lay flat metal tube dress layer 2 outside of three plain conductors by tuber.Metal tube dress layer 2 can adopt stretch-proof, high corrosion resistant metal material, as stainless steel material.

See Fig. 1, the seam 1 of the flat pipe dress layer 2 that entirety is longitudinally wrapped up is managed the integral solder sealing of dress layer all fronts by straight seam welding mode, and makes weld seam 1 outside flat-satin.Packing of product employing dish dress.

Claims (1)

1. a numerically controlled reciprocating submersible pump private cable, comprise three plain conductors, insulating barrier, filling heatproof, pipe dress layer, it is characterized in that: three plain conductor external diameters are respectively equipped with temperature-resistant insulation layer, be provided with filling heat-resistant layer outward at temperature-resistant insulation layer, three plain conductors isometrical and smooth in appearance are arranged in parallel, most external arranges overall flat metal tube dress layer, and flat metal tube dress layer is by extending straight seam welding sealing.