CN105781428A - Well workover derrick of snubbing serving machine - Google Patents

Abstract

The invention belongs to the technical field of oil and gas well borehole operation device, and particularly relates to a well workover derrick of a snubbing serving machine. The well workover derrick includes a crown block, an upper derrick body, a lower derrick body, connection lug bases and a telescopic hydraulic cylinder, wherein the connection lug bases and the telescopic hydraulic cylinder are arranged on the lower end of the lower derrick body; the crown block includes a pulley block wound with a steel wire rope, a base, a guard bar, and a puffer guide pulley; the upper derrick body and the lower derrick body are of sleeve structures, the upper derrick body is sleeved with the lower derrick body, and stretching and contraction of the upper derrick body can be performed by the telescopic hydraulic cylinder; four connection lug bases are arranged on the lower part of the lower derrick body, and the center of the back surface of the lower derrick body is provided with a channel with a suitable height and width through which an oil pipe can pass. According to the invention, a well workover function, work under pressure, and a well fluid reinjection technique are organically integrated, and then a high-efficient snubbing serving machine is formed; consign and lifting devices can be avoided during working and transfer of the well workover derrick, and then manpower, material resources, and financial resources can be greatly saved, and the well workover derrick is convenient, fast, easy, and novel.

Description

A kind of well workover derrick of snubbing serving machine

Technical field

The invention belongs to Oil/gas Well underground work device technique field, be specifically related to the well workover derrick of a kind of snubbing serving machine.

Background technology

When oil well, water injection well or gas well carry out underground work, when having pressure in well, it usually needs first carry out kill-job or open flow blood pressure lowering processes.Easily make formation contaminant due to kill-job, open flow can make Local Layer pressure reduce, and causes ground pollution.Therefore, the work measure of no killing well, not open flow is increasingly paid attention to by each oil field and promotes.

When having pressure in well, in order to realize no killing well, not open flow workover treatment, it is necessary for a whole set of operation device under pressure, by operation device under pressure with equipment efficient combination such as workover rigs, jointly complete Stress control, oil pipe removes, relocation equipment, and such equipment is snubbing serving machine or is Operating Pressure machine.

At present, at home and abroad, snubbing serving equipment has following several composite type:

1, assist type: coordinating with workover rig and just can complete rountrip with pressure, this kind equipment is called assist type operation device under pressure；

2, stand alone type: do not need workover rig to coordinate and just can complete rountrip with pressure, this kind equipment is called stand alone type operation device under pressure；

The equipment of both modes, when movement, well head are installed, it is necessary to rely on towed vehicle, crane and just can complete resettlement, installment work, add other auxiliary equipment, in whole work progress, the workload that just seems is too big, and time-consuming bothersome, cost is too high.

Summary of the invention

It is an object of the invention to overcome existing snubbing serving equipment workload too big, time-consuming bothersome, problem that cost is too high.

For this, the invention provides the well workover derrick of a kind of snubbing serving machine, described well workover derrick includes: overhead traveling crane, derrick upper body, derrick lower body and be arranged at the connection ear base of derrick lower body lower end, extending cylinder, it is characterised in that:

Overhead traveling crane includes the assembly pulley of lay winding wire ropes, base, guardrail, puffer directive wheel；Derrick upper body, derrick lower body are sleeve type structures, and it is internal that derrick upper body is sleeved under derrick, and derrick upper body stretches out, drop back into and utilize extending cylinder to implement；Four connection ear bases are arranged at derrick lower body bottom；In the middle part of the derrick lower body back side, leave a height, passage that width is suitable, in order to oil pipe passes through.

Beneficial effects of the present invention: this integral type snubbing serving machine novel structure of the present invention, compact, rationally, efficiency of construction is high, has the advantage that simultaneously

1, a car dress, and certainly walk, well workover functional part, Operating Pressure functional part are organically combined, is jointly assembled on satisfactory vehicle with chassis special；Whole equipment by moving up and down, can move forward and backward, and afterbody moves left and right to facilitate and aligns well head.

2, well workover derrick and operating platform are fixed together, and the two is set level or stand up and rotates around same axle；

3, after well workover derrick erects, duty is vertical, and the up and down space of hook block is between derrick and chassis；

4, blowout preventer set, lifting fluid cylinder etc. are fixed in the middle of operating platform, together erect with operating platform, together set level, and well head center is in the middle of operating platform；

The parts such as the derrick that 5, is fixed together, operating platform, blowout preventer set, key station are made as a whole relative chassis and can together be moved forward and backward, and conveniently align well head；

6, being arranged in parallel before and after master rotor and five cylinder oiling water injecting pumps, share a frame, power intake is in same direction, by chain-driving；

7, five cylinder oiling water injecting pump, is five cylinder pumps, is decomposed into a three cylinder pump and two cylinder pumps, and three cylinder pump is lifting fluid cylinder supply hydraulic power；Two cylinder pumps are that the balance liquid returned up in well is recycled in well, reach whole work progress not open flow.

Below with reference to accompanying drawing, the present invention is described in further details.

Accompanying drawing explanation

Fig. 1 is present configuration schematic diagram.

In figure: 1, overhead traveling crane；2, derrick upper body；3, derrick lower body；4, connection ear base；5, extending cylinder.

Detailed description of the invention

The present embodiment provides the well workover derrick of a kind of snubbing serving machine, as shown in Figure 1, described well workover derrick includes: overhead traveling crane 1, derrick upper body 2, derrick lower body 3 and be arranged at the connection ear base 4 of derrick lower body 3 lower end, extending cylinder 5, and overhead traveling crane 1 includes the assembly pulley of lay winding wire ropes, base, guardrail, puffer directive wheel；Derrick upper body 2, derrick lower body 3 are sleeve type structures, and derrick upper body 2 is sleeved in derrick lower body 3, and derrick upper body 2 stretches out, drop back into and utilize extending cylinder 5 to implement；Four connection ear bases 4 are arranged at derrick lower body 3 bottom；In the middle part of derrick lower body 3 back side, leave a height, passage that width is suitable, in order to oil pipe passes through.

A kind of integral type snubbing serving machine, this integral type snubbing serving machine is assisted steady component to constitute by Self propelled type well repairing machine chassis, upper finishing well power transmission member, well workover derrick, Operating Pressure operating platform, upper dress front-rear adjusting device, blowout preventer set, fluid cylinder jacking system, Accumulator arrangements, oiling water injecting pump part, mixing console, derrick and operating platform；

Upper finishing well power transmission member is arranged on workover rig chassis, and operating platform and well workover derrick installation are at workover rig chassis afterbody, and blowout preventer set is fixed in the middle part of operating platform, sets level together in company with operating platform, stand up and all around, moves up and down；Upper dress front-rear adjusting device is fixed on workover rig chassis afterbody and drives whole operating platform, well workover derrick, blowout preventer set to move forward and backward；Oiling water injecting pump part connects with the hydraulic system of well workover derrick for providing hydraulically extensible power to well workover derrick.

Workover rig chassis includes: driver's cabin, electromotor, change speed gear box, vehicle frame, vehicle bridge, rear tail boom, front and back hydraulic leg, lifting fluid cylinder supporting seat, steering, air-channel system, Circuits System, brakes；Behind chassis, tail boom is telescopic for suit both sides, monolateral scalable mm～mm；Hydraulic leg before and after four, chassis, can adjust height mm～mm up and down；The general components installed on workover rig chassis can move forward and backward mm～mm.

Upper finishing well power transmission member includes: power transmission shaft, workover rig right angle gear box, workover rig winch, workover rig hoist leveling system, chain box, the fore-stock of support workover rig derrick, hook block, workover rig gas circuit, fluid path, Circuits System；

Workover rig hoists leveling system and the fore-stock supporting workover rig derrick connects well workover derrick, for adjusting hoisting and leveling of well workover derrick；

Power transmission shaft transmission power is to workover rig right angle gear box, and workover rig right angle gear box controls hoist leveling system, the fore-stock supporting workover rig derrick and hook block of workover rig by workover rig winch and chain box and acts on hoisting and leveling of adjustment well workover derrick；

Hook block is positioned at the lower outside of well workover derrick when well workover derrick is set level.

Well workover derrick includes: overhead traveling crane, derrick upper body, derrick lower body and be arranged at the connection ear base of derrick lower body lower end, extending cylinder；

Overhead traveling crane includes the assembly pulley of lay winding wire ropes, base, guardrail, puffer directive wheel；Derrick upper body, derrick lower body are sleeve type structures, and it is internal that derrick upper body is sleeved under derrick, and derrick upper body stretches out, drop back into and utilize extending cylinder to implement；Four connection ear bases are arranged at derrick lower body bottom, and four corresponding with being fixed on Operating Pressure operating platform support ear mount and connect, it is achieved derrick positions；In the middle part of the derrick lower body back side, leave a height, passage that width is suitable, in order to oil pipe passes through.

Operating Pressure operating platform includes: main platform body, platform pedal, guardrail, ladder, escaping slideway etc.；

Main platform body is stepped, and highest point is platform pedal, and the low platform in the right is derrick lower body installation site, and operating platform is realized with the upper lower body engaging lug seat in upper dress front-rear adjusting device by ear mount with workover rig chassis；

Ring flange is set in the middle of main platform body bottom, connects fixing blowout preventer set；

Operating platform is truss structure, and main platform body rotates the axis of rotation of ear mount and upper lower body engaging lug seat around operating platform, and the power of rotation is four lifting fluid cylinders, and lifting fluid cylinder is arranged on the fixing seat of the lifting fluid cylinder in main platform body.

Upper dress front-rear adjusting device includes: two retractor devices guiding overcoats arranged side by side, be positioned at the retractor device guiding inner sleeve of retractor device guiding jacket internal, two retractor device outer inner rooms of guiding are connected to cross bar, fluid cylinder is adjusted before and after this cross bar is provided with, the outer end of retractor device guiding inner sleeve is provided with outside lower body engaging lug seat, two upper lower body engaging lug seats and connects with connecting rod, and front and back adjust the expansion link of fluid cylinder and are connected on this connecting rod；Front and back adjustment fluid cylinder stretches out, the upper lower body engaging lug seat of drive of retracting moves forward and backward, thus driving whole operating platform, derrick, blowout preventer set etc. to move forward and backward.

Blowout preventer set includes realizing each preventer unit that Operating Pressure controls, this preventer unit includes triple ram preventer, double ram type preventer or single ram type perventer, rising short circuit or telescoping tube, annular preventer from lower to upper successively, annular preventer traveling slip mounted below or stationary slip, traveling slip or stationary slip both sides rely on lifting fluid cylinder hanger to be connected to lifting fluid cylinder, and the lifting fluid cylinder other end is fixing on the operational platform.

Oiling water injecting pump part includes five cylinder pump power ends, five cylinder reciprocating pumps, turnover oil pipe line, inlet and outlet pipe；

Five cylinder reciprocating pumps are provided power by five cylinder pump power ends, and this five cylinders reciprocating pump includes a triplex filling pump connected with turnover oil pipe line and the two cylinder water injecting pumps connected with inlet and outlet pipe.

Mixing console, has concentrated control unit such as the workover rig functional element operated valve member, blowout preventer set of all executive components to control valve member, lifting fluid cylinder control valve member, and gas circuit, fluid path, circuit control piece, mixing console is fixing dismountable.During well-repairing work, hanging out in the middle part of platform, be put on platform planar operating position, construction terminates, and puts back to again platform deposit position, it is no longer necessary to individually lifting and transport.

Derrick and platform assisting tension and stabilisation systems, including two platform damped stretching devices with for fixing before the derrick of well workover derrick guy wire after guy wire, derrick, platform damped stretching device one end is fixed on fore-stock, and the other end is connected to front end, main platform body top；Mainly when derrick and platform stand up backward, the impulsive force that buffering is toppled over backward, assist lifting fluid cylinder that derrick and platform are hoisted and put in place；Before derrick, guy wire has two, primarily serves the effect of stable derrick；After derrick, guy wire has two or four, primarily serves pulling derrick, when hook block increasing productivity, it is prevented that during derrick crown stress, derrick bends to the left.

Exemplified as above is only illustration to the present invention, is not intended that the restriction to protection scope of the present invention, every belongs within protection scope of the present invention with the same or analogous design of the present invention.

Claims (1)

1. a well workover derrick for snubbing serving machine, described well workover derrick includes: overhead traveling crane (1), derrick upper body (2), derrick lower body (3) and be arranged at the connection ear base (4) of derrick lower body (3) lower end, extending cylinder (5), it is characterised in that:

Overhead traveling crane (1) includes the assembly pulley of lay winding wire ropes, base, guardrail, puffer directive wheel；Derrick upper body (2), derrick lower body (3) are sleeve type structures, and derrick upper body (2) are sleeved in derrick lower body (3), and derrick upper body (2) stretch out, drop back into and utilize extending cylinder (5) to implement；Four connection ear bases (4) are arranged at derrick lower body (3) bottom；In the middle part of derrick lower body (3) back side, leave a height, passage that width is suitable, in order to oil pipe passes through.