CN1450244A

CN1450244A - Set method for drilling fluid fixing-controlling technology

Info

Publication number: CN1450244A
Application number: CN 03117815
Authority: CN
Inventors: 任翔; 曾礼宾; 李�杰; 羡维伟; 郑勇
Original assignee: Sichuan Petroleum Administration Bureau
Current assignee: Sichuan Petroleum Administration Bureau
Priority date: 2003-05-07
Filing date: 2003-05-07
Publication date: 2003-10-22

Abstract

The present invention relates to a disposition method of drilling fluid solid control equipment for technological process of medium-deep drilling rig drilling fluid solid control equipment disposition, belonging to the field of petroleum natural gas drilling machine solid control equipment design technology. Said invention adopts five-stage solid control mode of using high-frequency drilling fluid vibration sieve with different mesh number, sand-removing cleaner, desilt cleaner, medium and low speed centrifugal and high-speed centrifugal instead of existent generally-adopted solid control mode of two vibration sieves, sand-removing cleaner, desilt clenaer and medium-low speed centrifuger.

Description

The collocation method of drilling fluid solid controlling technology

Technical field: a kind of collocation method of drilling fluid solid control equipment, be used for technological process to middle-deep well, the configuration of deep drilling rig drilling fluid solid control equipment, belong to the design design field of petroleum gas rig solid controlling equipment.

Background technology: in the prior art, the drilling fluid solid controlling technological process of most of drilling crews use in each oil field, the whole nation all is to adopt 2 vibrosieves basically at present, and single compass screen surface is long-pending less than 2m ²Practical sieve number is less than 80 orders, 12 cun desanding cleaners, 5 cun desilt cleaners, dispose the collocation method of a middle low speed centrifuge again, and the rig that has is because the problem of expense, not low speed centrifuge in the outfit, because the needs on the engineering, it is long-pending greater than 2m to be equipped with two large tracts of land, single compass screen surface on new rig in recent years ²The high-frequency vibrosieve, the screen area of vibrosieve is the 80-150 order, an incorporate desanding desilter, the centrifuge of a middle low speed, in these existing collocation methods, original configuration can not be satisfied the requirement of modern drilling well basically, and up-to-date collocation method is greatly improved than original collocation method on the efficient of treated drilling fluid, but by facts have proved, though adopting the shortcoming of the drilling fluid cure system of present latest configuration method configuration is can control effectively in the drilling fluid 〉=solid phase particles of 74 μ m, but in the drilling fluid＜10 μ m, especially＜5 the solid phase of μ m lacks the removing ability, and these＜solid matter of 10 μ m is the main cause that causes drilling fluid viscosity to raise in drilling fluid reciprocation cycle process, therefore under the situation of prior art, in order effectively to control the viscosity of drilling fluid, have only with the method for dilution and go to solve, constantly dilution has caused the continuous increase of drilling fluid total amount again, the increase of drilling fluid has caused the consumption of material again, simultaneously, too much drilling fluid has also caused the pollution problem to environmental protection of the handling problem of unnecessary drilling fluid and the drilling fluid that overflows, in addition, because the quantity and the order number of vibrosieve are fixed, when running into the too big or drilling fluid medium clay soil of mud flow rate and too much stick with paste the mesh of screen cloth, the race slurry incident of drilling fluid will take place.

Summary of the invention: the objective of the invention is to design a kind of after drilling fluid is by the solid controlling system by this method configuration, can remove effectively in the drilling mud＞collocation method of the drilling fluid solid control equipment of the solid matter of 3-15 μ m.

The present invention is achieved in that arrangement and the Pyatyi solid controlling mode that the present invention includes sand pump, sand pump be arranged side by side with the base of the same slurry tank of sand pump outer end on; Pyatyi solid controlling mode is: high frequency drilling fluid vibrating sieve+desanding cleaner+desilt cleaner+middle low speed centrifuge+supercentrifuge.

Advantage of the present invention is: the vibrosieve of the high frequency drilling fluid of the first order is owing to adopted the screen cloth of different meshes, therefore can remove the above solid phase gravel of 100 μ m effectively, to alleviate the burden of upstream device, can also be when mud flow rate be excessive or the drilling mud medium clay soil use 40-80 purpose screen cloth when too much, take place to prevent the incident of running slurry; The desilter of the partial desander and the third level not only can be removed through outside the solid phase particles less after the drilling fluid vibrating sieve, can also be when in case drilling fluid vibrating sieve takes place as the sieve breakage fault, being used for interim removing should be by the solid phase particles of vibrosieve removing, the middle low speed centrifuge of the fourth stage is installed in after desilter and the desander, purpose is in order to isolate＞solid phase particles of 10-20 μ m, as the weighting material in the drilling fluid, so that be recovered in the drilling fluid, level V is a supercentrifuge, its main task is to isolate＞solid phase particles of 3-15 μ m, and the solid phase particles of these 3-15 μ m is the subject matter that influences drilling fluid viscosity.

Description of drawings:

Fig. 1 is the design diagram of Pyatyi solid controlling technique collocation method of the present invention.

The specific embodiment: provide embodiments of the invention below in conjunction with accompanying drawing, the present invention includes the layout type and the Pyatyi solid controlling configuration mode of sand pump, sand pump 5 be arranged side by side with the base of

desilt cleaner

3,12 jars of outer ends of desanding cleaner 4 same slurry tanks on, the suction of drilling fluid and pump pipeline and be embedded in below the slurry tank jar face; Pyatyi solid controlling mode is: low speed centrifuge 7+ supercentrifuge 8 among the high frequency drilling fluid vibrating sieve 20 desilt cleaner 3+ desanding cleaner 4+, wherein the desilt cleaner 3+ desanding cleaner 4 that adopts of the second level and the third level also can be a desilt desander integral machine, high frequency drilling fluid vibrating sieve 1 comprises 3-4 platform vibrosieve, and the screen cloth of configuration different meshes, its adjusting range is the 40-150 order, can remove the solid phase gravel more than 100 microns so effectively, so that alleviate the burden of upstream device, also can be when mud flow rate be excessive or the drilling mud medium clay soil prevent that the incident of running slurry from taking place when too much sticking with paste net; The second level and the third level are desilt cleaner 3 and desanding cleaner 4, the nozzle arrangement of its swirler is respectively 5 " 4 " and 12 " 10 " nozzle, the second level and the third level can be adopted desilt desander integral machine, the nozzle arrangement of its swirler is measure-alike with the swirler nozzle arrangement that adopts independently desilt cleaner and desanding cleaner, desilt cleaner of the second level and the third level and desanding cleaner not only can be removed through less solid phase particles after the vibrosieve, can also be when in case vibrosieve take place as the sieve breakage fault, being used for interim removing should be by the solid phase particles of drilling fluid reciprocating sieve removing; The fourth stage is that a separation factor is the middle low speed centrifuge 7 of 650-1100, mainly is to isolate＞solid phase particles of 10 μ m, as the weighting material in the drilling fluid, so that be recovered in the drilling fluid; Level V is the supercentrifuge 8 that a separation factor is 1500-2300, and its main task is to remove the solid phase particles of＞3 μ m; During practical operation, when drilling fluid returns out ground through the higher drilling fluid vibrating sieve of the wherein sieve number of high frequency drilling fluid vibrating sieve 2 by bleed off pipe 1 from well, the above solid phase gravel of 〉=100 μ m is removed effectively, to alleviate the burden of upstream device, when excessive or drilling fluid medium clay soil is too much stuck with paste net when mud flow rate, start the lower drilling fluid vibrating sieve of sieve number and can prevent that the incident of running slurry from taking place, after the drilling fluid process high frequency drilling fluid vibrating sieve 2, waste residue enters waste residue groove 9, and after drilling fluid enters slurry tank 10, enter desilt cleaner 3 and the desanding cleaner 4 of the second level and the third level by sand pump 5, here can remove through less solid phase particles in the drilling fluid after the high frequency drilling fluid vibrating sieve 2, enter the middle low speed centrifuge 7 of the fourth stage again, here mainly be to isolate＞solid phase particles of 10 μ m, as the weighting material in the drilling fluid, the weighting material of separating can be recovered in the slurry tank 13 of depositing drilling fluid simultaneously; After separating through the fourth stage, drilling fluid enters the supercentrifuge 8 of level V, and its main task is to clear out of＞solid phase particles of 3 μ m; After through high frequency drilling fluid vibrating sieve 2, desilt cleaner 3 and desanding cleaner 4, middle low speed centrifuge 7 and supercentrifuge 8, solid concentration in the drilling fluid system can remain on below 0.3%, but also can effectively control viscosity, relative density and the shear viscosity of drilling fluid, 6 is displacement pump in the accompanying drawing, 12 for being provided with the slurry tank of desilt cleaner 3, desanding cleaner 4 and

sand pump

5, and 11 is the slurry tank connecting line.

Claims

1. the collocation method of drilling fluid solid controlling technology comprises it is characterized in that the set-up mode and the Pyatyi solid controlling mode of sand pump:

A. the set-up mode of described sand pump be with sand pump be arranged side by side with the base of desilt cleaner and the same slurry tank jar of desanding cleaner outer end on;

B. described Pyatyi solid controlling mode is: high frequency drilling fluid vibrating sieve+desilt cleaner+desanding cleaner+middle low speed centrifuge+supercentrifuge.

2. the collocation method of drilling fluid solid controlling technology according to claim 1 is characterized in that: desilt cleaner+desanding cleaner that the second level in the described Pyatyi solid controlling mode and the third level are adopted also can adopt desilt desander integral machine.

3. the collocation method of drilling fluid solid controlling technology according to claim 1 is characterized in that: described high frequency drilling fluid vibrating sieve comprises 3-4 platform vibrosieve, the screen cloth of high frequency drilling fluid vibrating sieve configuration different meshes, and its adjusting range is the 40-150 order.

4. the collocation method of a kind of drilling fluid solid controlling technology according to claim 1 is characterized in that: the nozzle arrangement of the swirler of described desilt cleaner and desanding cleaner is respectively 5 " 4 " and 12 " 10 ".

5. the collocation method of drilling fluid solid controlling technology according to claim 1 is characterized in that: the separation factor of low speed centrifuge is 650-1100 in described, and the separation factor of supercentrifuge is 1500-2300.