CN108756792A - A kind of deep sea drilling hydrophthalmia blocks monitoring and drilling pump damaging identification method - Google Patents
A kind of deep sea drilling hydrophthalmia blocks monitoring and drilling pump damaging identification method Download PDFInfo
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- CN108756792A CN108756792A CN201810516470.1A CN201810516470A CN108756792A CN 108756792 A CN108756792 A CN 108756792A CN 201810516470 A CN201810516470 A CN 201810516470A CN 108756792 A CN108756792 A CN 108756792A
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- 238000005553 drilling Methods 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 238000004458 analytical method Methods 0.000 claims abstract description 23
- 238000013523 data management Methods 0.000 claims abstract description 18
- 230000008859 change Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims abstract description 3
- 239000012530 fluid Substances 0.000 claims description 15
- 230000008676 import Effects 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 101150054854 POU1F1 gene Proteins 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
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- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of deep sea drilling hydrophthalmias to block monitoring and drilling pump damaging identification method, includes the following steps：1) the first mass flowmenter is set in the inlet of drilling circulation system, in the exit of drilling circulation system, the second mass flowmenter is set, first mass flowmenter and the second mass flowmenter respectively acquire the mass flow data at drilling well entrance and exit in real time, and by collected data transmission to Data Management Analysis end；2) the bit port stopping state of drilling well is monitored according to processing analysis end：1. when being pumped raising, if inlet mass flow does not change at any time, outgoing quality flow does not change at any time, and exports equal always with inlet flow rate, it is determined that the reason of pump pressure increases is that bit port blocks；2. in the case where determining that bit port, which occurs, to be blocked, the number that bit port blocks further is judged；3) Data Management Analysis end carries out drilling pump damaged condition.
Description
Technical field
The present invention relates to a kind of deep sea drilling hydrophthalmias to block monitoring and drilling pump damaging identification method, belongs to offshore oil and opens
Hair field.
Background technology
Bit port blocks in deep sea drilling operation and drilling pump damaged condition often occurs, if cannot in time find just
Can cause to cause catastrophic consequence, thus the bit port of deep sea drilling block and drilling pump damage monitoring technology increasingly by
Concern.With the fast development of well drilling industry, there are many method of hydrophthalmia blocking and drilling pump damage monitoring, but this
The precision of a little monitoring method methods is not high enough, may result in erroneous judgement, and these monitoring method methods are not prompt enough, cannot have in time
It imitates to adopt remedial measures.
Invention content
In view of the above-mentioned problems, the object of the present invention is to provide a kind of higher deep sea drilling hydrophthalmia of accuracy block monitoring and
Drilling pump damaging identification method.
To achieve the above object, the present invention uses following technical side's bill：A kind of deep sea drilling hydrophthalmia blocks monitoring and bores
Well pump damaging identification method, includes the following steps：
1) the first mass flowmenter is set in the inlet of drilling circulation system, is arranged in the exit of drilling circulation system
Second mass flowmenter, the first mass flowmenter and the second mass flowmenter are respectively to drilling circulation system entry and exit
Mass flow data are acquired in real time, and by collected data transmission to Data Management Analysis end；
2) the bit port stopping state of drilling well is monitored by following data handling procedures according to processing analysis end：
1. when be pumped increase when, if inlet mass flow does not change at any time, outgoing quality flow is not at any time
It changes, and exports equal always with inlet flow rate, it is determined that the reason of pump pressure increases blocks for bit port；
2. in the case where determining that bit port, which occurs, to be blocked, the number that bit port blocks further is judged, specifically：
Pump pressure Δ p when not blocked by bit ports0, in conjunction with formula Δ ps0=P+ Δs pb0Calculate bit pressuredrop Δ pb0；
K is calculated further according to following formula：
It is read by Data Management Analysis end and the pump pressure Δ p after bit port blocks occurssm, and combine formula Δ psm=P+
ΔpbmCalculate the pressure drop Δ p occurred when bit port blocksbm；
The number m of bit port blocking is calculated further according to following formula：
In above-mentioned formula, P is constant；N indicates the number of bit port；K indicates that constant, expression formula are as follows：
ρ in formuladIndicate that the density of drilling fluid, Q indicate that the mud flow rate of nozzle, C indicate nozzle orifice coeficient, d tables
Show the diameter of hydrophthalmia；
3) Data Management Analysis end is monitored drilling pump damaged condition by following data handling procedures：
If a series of timing node ti, (i=0,1,2 ..., n), in tiThe mass flow of moment corresponding drilling well inlet
For Qpi, pump efficiency percent loss is η, and the initial mass flow of drilling well inlet is Qp0, and：
η=1-Qpi/Qp0
Percentage of failures η is pumped, the degree for quantificational expression pump failure.
The step 2) 2. in, P=Δs pg+Δpst+Δpa, the Δ p in formulagIndicate manifold of ground pressure consumption, Δ pstTable
Show that drill string internal pressure consumes, Δ paIndicate annular pressure lost.
In the step 3), when the value of η is more than 10%, show that drilling pump is of serious failure.
First mass flowmenter and the second mass flowmenter are all made of coriolis mass flowmeters.
The import of first mass flowmenter is connect by the first valve with drilling inlet manifold, and the first mass flowmenter goes out
Mouth is connect by the second valve with drilling inlet manifold, in the drilling entrance between the first mass flowmenter import and outlet
Third valve is set on manifold；The import of second mass flowmenter is connect by the 4th valve with drilling outlet header, the second matter
The outlet for measuring flowmeter is connect by the 5th valve with drilling outlet header, positioned at the second mass flowmenter import and outlet
Between drilling outlet header on be arranged the 6th valve.
The present invention has the following advantages due to taking above technical side's bill：The present invention passes through in drilling entrance, drilling
The first mass flowmenter, the second mass flowmenter is arranged to monitor the changes in flow rate of entrance in exit, and further passes through stream
Amount changes to monitor bit port stopping state and drilling pump damaged condition.The present invention has precision high, and range is big, cost-effective
The advantages of.
Description of the drawings
Fig. 1 is the flow regime schematic diagram occurred in drilling process when bit port blocks；
Fig. 2 is flow regime schematic diagram when drilling pump damage occurring in drilling process；
Fig. 3 is the structure diagram of coriolis mass flowmeters.
Reference numeral meaning in figure is as follows：
1, mud pit；2, drilling fluid；3, slush pump pipeline；4, slush pump；5, the first mass flowmenter；51, measurement pipe；
52, sensor；53, vibrator；54, ring flange；6, third valve；7, the second valve；8, the first valve；9, the first mass flow
Count holder；10, standpipe；11, swivel control head；12, steering gear；13, preventer group；14, drilling rod；15, drill bit；16, drill bit water
Eye；17, pit shaft；18, stratum；19, the second mass flowmenter；20, the 6th valve；21, the 4th valve；22, the 5th valve；23,
Second mass flowmenter holder；24, choke flow line；25, drilling fluid outlet；26, sensor data cable；27, Data Management Analysis
End；28, drilling platforms；29, tension ropes；30, telescopic joint；31, marine riser；32, seawater, 33, hydrophthalmia blocking position；34, drilling well
Pump damage position.
Specific embodiment party French
The present invention is described in detail below with reference to the accompanying drawings and embodiments.
The present invention proposes a kind of deep sea drilling hydrophthalmia and blocks monitoring and drilling pump damaging identification method, including following step
Suddenly：
1) the first mass flowmenter as shown in Figure 1 and Figure 2, is set in the inlet of drilling circulation system, in drilling circulation system
The second mass flowmenter is arranged in the exit of system, and the first mass flowmenter and the second mass flowmenter are respectively to drilling circulation system
Mass flow data at entrance and exit are acquired in real time, and by collected data transmission to Data Management Analysis end.
2) Data Management Analysis end is monitored the bit port stopping state of drilling well by following data handling procedures：
1. when be pumped increase when, to whether occur bit port blocking judge
When drilling fluid is discharged from drilling pump, there is certain pump pressure.Bit port blocking can cause pump pressure to increase, but pump
Pressure increase it could also be possible that caused by the operating modes such as gas cut, it is therefore desirable to by the mass flow data of drilling well outlet and inlet come
Further determine whether that hydrophthalmia, which occurs, to be blocked, specifically, when inlet mass flow does not change at any time, outgoing quality flow
When not changing at any time, and exporting equal always with inlet flow rate, it may be determined that the reason of pump pressure increases is bit port
It blocks.
2. drilling fluid will consume pump pressure when flowing through manifold of ground, boring main interior, bit nozzle and annular space.Pump pressure passes
The basic relational expression passed is：
Ps=Δ pg+Δpst+Δpa+Δpb
In formula, PsIndicate drill pump pressure；ΔpgIndicate manifold of ground pressure consumption；ΔpstIndicate drill string internal pressure consumption；ΔpaIt indicates
Annular pressure lost；ΔpbIndicate bit pressuredrop.
When manifold of ground pressure consumption, drill string internal pressure consumption, annular pressure lost remain unchanged, the variation of bit pressuredrop will directly be led
Cause the variation of pump pressure.By manifold of ground pressure consumption, drill string internal pressure consumption and annular pressure lost and indicated with constant P, then Ps=P+ Δs
pb.Wherein, the calculation formula of bit pressuredrop is：
In formula, dneIndicate nozzle equivalent diameter；ρdIndicate the density of drilling fluid；C indicates nozzle orifice coeficient；Q indicates spray
The mud flow rate of mouth.
Wherein, nozzle equivalent diameter dneCalculation formula it is as follows：
In formula, diIndicate nozzle diameter；Z indicates nozzle number；
Therefore, in the case where the mud flow rate of nozzle, nozzle orifice coeficient, drilling fluid density are constant, nozzle equivalent
The variation of diameter directly determines the variation of pump pressure, and the number that equivalent diameter is blocked with bit port increases and reduces, and is pumped
Rise with the reduction of equivalent diameter.It can be immediately seen the situation of change of pump pressure on Data Management Analysis end, pass through pump pressure
Variation to judge bit port block number.
Here how detailed analysis once judges the hydrophthalmia number that drill bit blocks：Assuming that have n bit port, each hydrophthalmia
Diameter be d, then nozzle equivalent diameter dneIt is represented by：
When not having to occur bit port blocking, equivalent diameter isBit pressuredrop Δ p at this timeb0It is represented by：
In formulaFor constant constant, indicated with K.
As bit port blocks the increase of number, pump pressure can be increased constantly, it is assumed that it is m that bit port, which blocks number, then
Bit port blocks bit pressuredrop Δ p at mbmIt is represented by：
Therefore the pump pressure Δ p when not having bit port blockings0For：
Δps0=P+ Δs pb0
When it is m that bit port, which blocks number, it is pumped Δ psmFor：
Δpsm=P+ Δs pbm
Therefore, it can judge that bit port blocks number according to the variation of pump pressure, can be read on Data Management Analysis end
Pump pressure Δ p when bit port does not blocks0Data, so as to calculate Δ pb0, and then calculate the value of constant K.Observe data
The pump pressure variation in analysis system is handled, by the new pump pressure Δ p shown by Data Management Analysis endsm, calculate Δ pbm, from
And calculate the number m of bit port blocking.
3) Data Management Analysis end is monitored drilling pump damaged condition by following data handling procedures：
The pump efficiency damaed cordition of different time points can be detected according to the entrance data on flows at Data Management Analysis end.
If a series of timing node ti, (i=0,1,2 ..., n), in tiThe mass flow of moment corresponding drilling well inlet is Qpi, pump
Effect percent loss is η, and the initial mass flow of drilling well inlet is Qp0, in the case where pumping damage, rate of discharge is constant, enters
Mouth flow is reduced, and the extent of damage of pump efficiency is may determine that according to the decrement of inlet mass flow.
Wherein：Qpi=pump impulse × cylinder sleeve volume × pump efficiency；
η=1-Qpi/Qp0
Illustrate that drilling pump is of serious failure when the value of η is more than 10%.
In above-described embodiment, the first mass flowmenter 5 and the second mass flowmenter 19 are all made of Coriolis mass and flow
Meter.Wherein, the import of the first mass flowmenter 5 is connect (as shown in Figure 3) by the first valve 8 with drilling inlet manifold, and first
The outlet of mass flowmenter 5 connect by the second valve 7 with drilling inlet manifold, positioned at 5 import of the first mass flowmenter and
Third valve 6 is set in the drilling inlet manifold between outlet；The import of second mass flowmenter 19 by the 4th valve 21 with
Outlet header's connection is crept into, the outlet of the second mass flowmenter 19 is connect by the 5th valve 22 with drilling outlet header, in place
6th valve 20 is set on the drilling outlet header between 19 import of the second mass flowmenter and outlet.First valve 8, second
Valve 7 and third valve 6 are for controlling whether drilling fluid flows through the first mass flowmenter 5, when third valve 6 is opened, the first valve
When door 8 and the second valve 7 are closed, drilling fluid is not passed through the first mass flowmenter 5, and the first mass flowmenter 5 does not work；Work as third
When the closing of valve 6, the first valve 8 and the second valve 7 are opened, drilling fluid flows through the first mass flowmenter 5, the first mass flowmenter
5 start to work.4th valve 21, the 5th valve 22 and the 6th valve 20 are for controlling whether drilling fluid flows through the second mass flow
Meter 19, when the 6th valve 20 opening, the 4th valve 21 and the 5th valve 22 are closed, drilling fluid is not passed through the second mass flowmenter
19, the second mass flowmenter 19 does not work；When the closing of the 6th valve 20, the 4th valve 21 and the 5th valve 22 are opened, drilling well
Liquid stream is started to work through the second mass flowmenter 19, the second mass flowmenter 19.
Working principle of the present invention is as follows：Drilling fluid is stored in mud pit 1, and drilling fluid 2 is by slush pump pipeline 3 by mud
Stock pump 4 is injected into standpipe 10 that (period flows through the first mass flowmenter 5, transmits flow information by sensor data cable 26
To Data Management Analysis end 27), then pass through drill string 14 and bit port 16 enters pit shaft 17, is then circulated up along pit shaft 17
To well head, after flowing through preventer 13 and steering gear 12, (flow is believed by sensor data cable 26 through the second mass flowmenter 19
Breath be transferred to data acquisition and Data Management Analysis end 27) and choke flow line 24 flow back to mud pit 1.Pass through entrance quality stream
The changing rule of amount is to monitor the situation of change of pit shaft wastage.
The various embodiments described above are merely to illustrate the present invention, and the implementation steps etc. of wherein method may be changed,
Every equivalents carried out on the basis of the technology of the present invention method case and improvement should not exclude the protection model in the present invention
Except enclosing.
Claims (5)
1. a kind of deep sea drilling hydrophthalmia blocks monitoring and drilling pump damaging identification method, include the following steps：
1) the first mass flowmenter is set in the inlet of drilling circulation system, is arranged second in the exit of drilling circulation system
Mass flowmenter, the first mass flowmenter and the second mass flowmenter are respectively to the quality of drilling circulation system entry and exit
Data on flows is acquired in real time, and by collected data transmission to Data Management Analysis end；
2) the bit port stopping state of drilling well is monitored by following data handling procedures according to processing analysis end：
1. when being pumped raising, if inlet mass flow does not change at any time, outgoing quality flow does not occur at any time
Variation, and export equal always with inlet flow rate, it is determined that the reason of pump pressure increases blocks for bit port；
2. in the case where determining that bit port, which occurs, to be blocked, the number that bit port blocks further is judged, specifically：
Pump pressure Δ p when not blocked by bit ports0, in conjunction with formula Δ ps0=P+ Δs pb0Calculate bit pressuredrop Δ pb0；
K is calculated further according to following formula：
It is read by Data Management Analysis end and the pump pressure Δ p after bit port blocks occurssm, and combine formula Δ psm=P+ Δs pbm
Calculate the pressure drop Δ p occurred when bit port blocksbm；
The number m of bit port blocking is calculated further according to following formula：
In above-mentioned formula, P is constant；N indicates the number of bit port；K indicates that constant, expression formula are as follows：
ρ in formuladIndicate that the density of drilling fluid, Q indicate that the mud flow rate of nozzle, C indicate that nozzle orifice coeficient, d indicate hydrophthalmia
Diameter；
3) Data Management Analysis end is monitored drilling pump damaged condition by following data handling procedures：
If a series of timing node ti, (i=0,1,2 ..., n), in tiThe moment mass flow of corresponding drilling well inlet is
Qpi, pump efficiency percent loss is η, and the initial mass flow of drilling well inlet is Qp0, and：
η=1-Qpi/Qp0
Percentage of failures η is pumped, the degree for quantificational expression pump failure.
2. a kind of deep sea drilling hydrophthalmia as described in claim 1 blocks monitoring and drilling pump damaging identification method, feature exists
In：The step 2) 2. in, P=Δs pg+Δpst+Δpa, the Δ p in formulagIndicate manifold of ground pressure consumption, Δ pstIndicate drill string
Internal pressure consumes, Δ paIndicate annular pressure lost.
3. deep sea drilling hydrophthalmia as described in claim 1 blocks monitoring and drilling pump damaging identification method, it is characterised in that：Institute
It states in step 3), when the value of η is more than 10%, shows that drilling pump is of serious failure.
4. a kind of deep sea drilling hydrophthalmia as described in any one of claims 1-3 blocks monitoring and drilling pump damaging identification method,
It is characterized in that：First mass flowmenter and the second mass flowmenter are all made of coriolis mass flowmeters.
5. a kind of deep sea drilling hydrophthalmia as claimed in claim 4 blocks monitoring and drilling pump damaging identification method, feature exists
In：The import of first mass flowmenter is connect by the first valve with drilling inlet manifold, and the outlet of the first mass flowmenter is logical
It crosses the second valve to connect with drilling inlet manifold, in the drilling inlet manifold between the first mass flowmenter import and outlet
Upper setting third valve；The import of second mass flowmenter is connect by the 4th valve with drilling outlet header, the second quality stream
The outlet of gauge is connect by the 5th valve with drilling outlet header, between the second mass flowmenter import and outlet
It creeps into and the 6th valve is set on outlet header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810516470.1A CN108756792B (en) | 2018-05-25 | 2018-05-25 | Deep sea drilling water hole blockage monitoring and drilling pump damage identification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810516470.1A CN108756792B (en) | 2018-05-25 | 2018-05-25 | Deep sea drilling water hole blockage monitoring and drilling pump damage identification method |
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| Publication Number | Publication Date |
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| CN108756792A true CN108756792A (en) | 2018-11-06 |
| CN108756792B CN108756792B (en) | 2020-06-02 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201513131U (en) * | 2009-09-04 | 2010-06-23 | 中国石油天然气集团公司 | Tubular column for drilling plugs in well repairing |
| CN102797451A (en) * | 2012-08-29 | 2012-11-28 | 中国海洋石油总公司 | Automatic control system and method for underground annulus pressure of deep water surface layer drilling |
| US20160230064A1 (en) * | 2013-10-18 | 2016-08-11 | Halliburton Energy Services, Inc. | Surface treated lost circulation material |
| CN107701142A (en) * | 2017-10-21 | 2018-02-16 | 中国石油集团渤海钻探工程有限公司 | A kind of testing pressure of well head rotary sealing type casing blanking plug |
-
2018
- 2018-05-25 CN CN201810516470.1A patent/CN108756792B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201513131U (en) * | 2009-09-04 | 2010-06-23 | 中国石油天然气集团公司 | Tubular column for drilling plugs in well repairing |
| CN102797451A (en) * | 2012-08-29 | 2012-11-28 | 中国海洋石油总公司 | Automatic control system and method for underground annulus pressure of deep water surface layer drilling |
| US20160230064A1 (en) * | 2013-10-18 | 2016-08-11 | Halliburton Energy Services, Inc. | Surface treated lost circulation material |
| CN107701142A (en) * | 2017-10-21 | 2018-02-16 | 中国石油集团渤海钻探工程有限公司 | A kind of testing pressure of well head rotary sealing type casing blanking plug |
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