CN2034615U

CN2034615U - Sampling device for freezen protection at portal of petroleum attraction well

Info

Publication number: CN2034615U
Application number: CN 87216480
Authority: CN
Inventors: 隋铁勇
Original assignee: No8 Oil Production Plant Daqing Petroleum Administration Bureau
Current assignee: No8 Oil Production Plant Daqing Petroleum Administration Bureau
Priority date: 1988-08-03
Filing date: 1988-08-03
Publication date: 1989-03-22

Abstract

The utility model discloses a sampling device for frozen protection at portal of petroleum attraction well, belonging to a sampling switch tool at the portal of the petroleum attraction well of petroleum field, which solves the problem of sampling and frozen protection of the portal of petroleum attraction well during the petroleum field high-cold period. The sampling device for frozen protection at portal of petroleum attraction well is mainly characterized in that two screw thread taper holes opened on the pipe wall of the petroleum circuit are respectively connected with a seal box [8] with inner converging bore and a valve body holder [1], the inner bore is provided with a valve rod [2] and sealing members [4, 6, 7], and the lower end of the valve rod is formed by a frustum body [11], a scraper board [2], etc. The sampling device for frozen protection at portal of petroleum attraction well has the advantage of simple structure, which is suitable for the sampling at the portal of the petroleum attraction well of petroleum field in paramos.

Description

Sampling device for freezen protection at portal of petroleum attraction well

A kind of switching tools that relates to the antifreeze sampling of production wellhead.

The oil recovery producing well assay that will regularly draw oil sample on the oil field, what often adopt is to pick out screw thread short circuit, gate, a short circuit elbow that is communicated with on well head oil circuit tube wall, constitute sampler, its incompatibility extremely frigid zones, often freeze plug and can not get oil sample, adopt hot water to scald, burn or twine the ribbon heater, to work make troubles, dangerous and waste energy.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art and a kind of antifreeze sampler of production wellhead of installing in oil pipe line is provided; Realize that its task can reach by following measure: on the threaded taper hole of oil circuit tube wall break-through, be connected with the seal box with reducing endoporus, valve block respectively, and pass reducing valve rod with handwheel and seal box sealing, spiral lifting within it in the hole, the valve rod lower end is cone table, scraper plate, and is gapped between the inner hole wall on scraper plate and the valve block.

Fig. 1 is antifreeze sampler structure diagrammatic sketch.

Fig. 2 is existing sampler structure diagrammatic sketch.

Show that from Fig. 2 it is to pick out screw thread short circuit, gate, a short circuit elbow that is communicated with to stretch out in pipeline one side on the oil circuit tube wall.

Fig. 1 shows, it is to connect a special short circuit ［ 9 ］ in oil line pipe, symmetrical boss cylinder ［ 3 ］ is respectively arranged within it, on the outer wall, two threaded taper holes are arranged on same center line on the boss cylinder, be threaded with seal box ［ 8 ］, valve block ［ 1 ］ respectively, the two is ［ 8 years old, same center line reducing endoporus is arranged 1 ］, its endoporus passes the have handwheel reducing valve rod ［ 2 ］ of ［ 5 ］, and the extension diameter section car has trapezoidal thread and seal box ［ 8 ］ to go up the undergauge hole to be connected on the valve rod, and valve rod can be along its lifting; Be equipped with packing ring ［ 7 ］ on valve rod and the seal box between the endoporus hole enlargement, seal ［ 6 ］ is tightened to be threaded by pressure cap ［ 4 ］ and to be made its sealing; The valve rod lower end is cone ［ 11 ］, scraper plate ［ 12 ］, and scraper plate and valve rod are one, and it and valve block ［ 1 ］ are gone up between the undergauge hole and left gap ［ 13 ］, and hole enlargement hole is a sample tap on it.Valve rod ［ 2 ］, valve block ［ 1 ］ are carried out modifier treatment T265-285, seal ［ 6 ］ is the polyethylene band, antifreeze sampler after the assembling is connected on the fuel-displaced pipeline of well head, just often valve rod ［ 2 ］ is gone up cone table ［ 11 ］ and is sealed valve block ［ 1 ］, turn handwheel ［ 5 ］ rises valve rod during sampling, cone table on the valve rod ［ 11 ］ breaks away from valve block ［ 1 ］, and fluid is ［ 13 ］ outflow from the gap, and the valve rod that afterwards descends is sealed valve block ［ 1 ］.When freezing, the turn handwheel of exerting oneself, valve rod upper scraping plate become flexible scars and strike off, and thief hole is unblocked.

The design is owing to be integrated sampler and oil pipe line, and the fluid in the pipeline is hot fluid, though adopt this anti-freezing sampler in the oil field the high and cold phase, sample tap is unblocked, takes a sample on time, and is safe and reliable, is convenient to the carrying out of taking a sample on the oil field shaft mouth.

Claims

1, a kind of antifreeze sampler of oil well mouth that is used for, it constitute short circuit, valve, it is characterized in that: on the threaded taper hole of oil circuit tube wall break-through, be connected with the seal box with reducing endoporus [8], valve block [1] respectively, and pass the have handwheel reducing valve rod [2] and seal box [8] sealing, spiral lifting of [5] within it in the hole, valve rod [2] lower end is cone table [11], scraper plate [12], between the inner hole wall on scraper plate and the valve block [1] gapped [13].