CN2249825Y

CN2249825Y - Metering instrument for oil logging vehicles

Info

Publication number: CN2249825Y
Application number: CN95203161U
Authority: CN
Inventors: 张宗义
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-02-24
Filing date: 1995-02-24
Publication date: 1997-03-19
Anticipated expiration: 2005-02-24

Abstract

The utility model relates to a novel meter, which is installed on a well logging vehicle in an oil field to measure well depth, the speed of pulling out, and the bearing capability of a cable. The utility model is designed through combining the advantages of two common meters at present. A pinch wheel assembly is fixed on the middle upper part of a cross beam, and the pinch wheel assembly is composed of a pinch wheel, a spring and a sensor. The upper part of the spring is fixed on a wheel shaft of the pinch wheel, and the other end of the spring is connected with the sensor. Tension wheels are respectively fixed on both ends of the cross beam, bearing wheels are respectively fixed on both sides of a metering wheel which is arranged on the lower part of the cross beam. The utility model has the advantages of little error and high precision.

Description

The novel batchmeter of oil reservoir logging car

The utility model is mounted in the novel batchmeter of measuring well depth on the oil reservoir logging car, removing speed and cable ability to bear.

Used measurement instrument mainly contains two kinds on the oil reservoir logging car at present.A kind of be the U.S. " Martin Decker, it is walked the cable mode and sees also accompanying drawing 1, it is top straining pulley and following measurement wheel produce with joint efforts to be become the signal of telecommunication be sent to instrument and show the power size.The subject matter that it exists in practice is: (1) depth measurement is inaccurate.Reason is that the wrap angle of cable on measurement wheel has only 20 °～30 °, causes the interface of the top tensile layer and the bottom compression layer in electric knee-be that indeformable face is fixing; The interface descends near measurement wheel when tension force is big; When tension force hour, rise on the interface; That is to say that the cable length that measurement wheel whenever circles and passes by has some difference with tension variation.It is just very considerable to accumulate difference! Cable tension force in the process of removing is huge strong and change at random, has caused sounding error excessive.(2) measurement wheel quick abrasion further strengthens sounding error.Make a concerted effort to be applied on the measurement wheel, this power can reach several 10KN, causes the measurement wheel rapid wearing, further strengthens sounding error.Another kind of two-wheel metering device also is U.S.'s product, and it plays the cable mode referring to accompanying drawing 2.This metering also is that cable moves, and drives the measurement wheel rotation, and counting and rotating speed are sent to instrument and show.It is the straight-line pass measurement wheel that difference is in cable, only depends on a wheel spring compression cable on opposite, prevents that measurement wheel from skidding.This method of measurement is owing to the cable straight-line pass, so length=π measurement wheel diameter that measurement wheel whenever circles and passes by.With cable size, the tension force size is all irrelevant.So depth measurement is accurate.And it is little that measurement wheel only bears the spring force wearing and tearing.But also there is following problem in it:

(1) can not measure tension force.(2) structure is very complicated, cost is very high the 4-6 of Martin Decker (be doubly).(3) the cable shake can cause certain sounding error.

The utility model purpose is comprehensive above two kinds of device advantages, overcomes the weak point of its existence, designs a kind of novel batchmeter that is used for the oil reservoir logging car, can measure well depth, remove speed and cable bears tension force, and the certainty of measurement height, simple in structure.

Design philosophy of the present utility model can embody by walking the cable mode, and as shown in Figure 3, depth measurement is a cable straight-line pass measurement wheel, compresses cable by the spring pinch roller and prevents to skid; The cable bending of straining pulley place, two ends is passed through.

Based on above design philosophy, the utility model structure is: a kind of novel batchmeter that is used for oil reservoir logging car measurement well depth, removes speed and cable ability to bear, has crossbeam 5, measurement wheel 1 is housed in suspension bracket 6 lower ends at crossbeam 5 middle parts is fixed with pinch roller assembly 7 with counting motor 2, crossbeam 5 middle and upper parts, pinch roller assembly 7 is made of pinch roller 9, spring 10, sensor 11, spring 10 1 ends are fixed on pinch roller 9 wheel shafts, the other end links to each other with sensor 11, each fixes a straining pulley 4 at crossbeam 5 two ends, and each fixes a load wheel 13 in crossbeam 5 bottom measurement wheels 1 both sides.

In order to guarantee the high-precision measuring requirement, the utility model is pressed to be equipped with between pinch roller 9 and the straining pulley 4 and is annotated chinaware or demagnetizer 8, automatic notes magnetic or autodegauss function have been increased, the manual accurately notes magnetic mark of extremely heavy originally and mistake has been cancelled, will produces irreplaceable effect unified subscriber data.

It is the aluminum steel combination wheel of 1m that the utility model measurement wheel is selected girth for use, has both guaranteed wear-resistingly, has alleviated weight again.

The utility model advantage is:

1. depth measurement is a cable straight-line pass measurement wheel, compresses anti-last the skidding of cable by the spring pinch roller.This method is identical with " two-wheel device ".So its total accuracy of sounding is identical with the two-wheel device with wear extent.

2. the straining pulley place cable bending at two ends is passed through, so the tension force metering is arranged on the crossbeam of fixing straining pulley, this point is similar to " Martin Decker " again.

3. owing to two end cable bendings, there is tension force to exist,, shakes the error that causes so further eliminated so the cable of middle part depth measurement part can not shaken at metering device.

4. be equipped with on the crossbeam and annotate magnetic (demagnetization) device,, can carry out cable demagnetization and the work of notes magnetic by instrument control.

In a word, novel six to take turns the batchmeter advantage be significantly for this, and the advantage that it combines Martin's gram and two-wheel metering device.Practical structures is also simply many than two-wheel metering device (8 wheels), and precision has surpassed the two-wheel metering device.In the oil field is on probation, reached depth error≤± 0.01%.

Description of drawings:

Fig. 1 is that " Martin Decker " walks cable mode schematic diagram in the prior art;

Fig. 2 is that " two-wheel metering device " walks cable mode schematic diagram in the prior art;

Fig. 3 is that the utility model is walked cable mode schematic diagram;

Fig. 4 is the utility model structure principle chart;

Fig. 5 is the utility model structure chart.

Embodiment: structure shown in Figure 5 is specific embodiment of the utility model.Two straining pulleys 4 are installed in crossbeam 5 two ends by bearing, suspension bracket 3 by collude plate, clamping plate are fixed on crossbeam 5 middle parts, measurement wheel 1 and counting motor 2 together use bearing fixing in suspension bracket 3 lower ends, each takes turns 3 with load of bearing fixing in suspension bracket 3 both upper ends thereof, and pinch roller 9, spring 10, sensor 11 are positioned at pinch roller assembly 7.Each bearing seal mode is the two-sided reinforced seal of lips, adopts lubricating oil lubricated.

Claims

1, the novel batchmeter of a kind of oil reservoir logging car, by crossbeam (5) and be contained in crossbeam (5) middle part suspension bracket (6) lower end measurement wheel (1) and count motor (2) and form, it is characterized in that crossbeam (5) middle and upper part is fixed with pinch roller assembly (7), pinch roller assembly (7) is made of pinch roller (9), spring (10), sensor (11), spring (10) one ends are fixed on pinch roller (9) wheel shaft, the other end links to each other with sensor (11), each fixes a straining pulley (4) at crossbeam (5) two ends, and each fixes a load wheel (13) in crossbeam (5) bottom measurement wheel (1) both sides.

2, novel batchmeter according to claim 1 is characterized in that: be equipped with between pinch roller (9) and straining pulley (4) and annotate chinaware or demagnetizer (8).

3, novel batchmeter according to claim 1 and 2 is characterized in that: it is the aluminum steel combination wheel of 1m that measurement wheel (1) is selected girth for use.