CN103277083A - Pressure monitoring system based on coal bed gas double-sleeve double circulation - Google Patents
Pressure monitoring system based on coal bed gas double-sleeve double circulation Download PDFInfo
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- CN103277083A CN103277083A CN2013102591389A CN201310259138A CN103277083A CN 103277083 A CN103277083 A CN 103277083A CN 2013102591389 A CN2013102591389 A CN 2013102591389A CN 201310259138 A CN201310259138 A CN 201310259138A CN 103277083 A CN103277083 A CN 103277083A
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Abstract
The invention relates to a pressure monitoring system based on coal bed gas double-sleeve double circulation. The pressure monitoring system based on the coal bed gas double-sleeve double circulation comprises a data acquiring module, a data transmitting module, a touch type liquid crystal display station, a power supply box and an upper computer, wherein the upper machine is connected with the data acquiring module and a sensor through bus interfaces, and the touch type liquid crystal display station is connected with the upper machine. The pressure monitoring system timely performs real-time analysis and risk judgment according to collapse of coal bed gas, jamming of a drilling tool, poor cuttings carrying capacity and other risks, can achieve combination of software and hardware for coal bed gas double-sleeve double circulation pressure monitoring and control, and a software and hardware combination mode adopted by the system aims at achieving real-timeness and accuracy. The pressure monitoring system enables technicists to predict or search the risk problems in well drilling quickly and timely and to put forward a quick risk control scheme, and accordingly the purpose of safe well drilling based on the coal bed gas double-sleeve double circulation is achieved. The pressure monitoring system really achieves the purpose of safe, efficient, quick, low-cost development of coal bed gas well drilling based on a double-sleeve double circulation process.
Description
Technical field
The present invention relates to a kind of gasser supervising device, particularly a kind of based on the two bicirculating pressure monitoring systems of sleeve pipe of coal bed gas.
Background technology
Coal bed gas is composed and is stored in the coal seam, because the coal seam is oily with routine, gas reservoir is different, has reservoir and buries shallow, very easily collapse, pollute, features such as pressure sensibility is strong generally adopt under balance pressure drilling technology when drilling well, just become the key technology of technology for this reason for the monitoring of pressure.
At present, the coal bed gas under balance pressure drilling technology of employing mostly is air-filling well-drilling technology, and there is following limitation in the exploitation of its present stage with respect to coal bed gas:
1. the gas injection pressure fluctuation is big: the one, because the coal seam very easily caves in, after protective casing caves in to cave well bore hole section, out-of-round oversized hole can appear, cause gas to pile up, and gas discharges suddenly when reaching critical pressure, causes bottom pressure to reduce rapidly; The 2nd,, in case the stratum takes place seriously to collapse, landwaste enters annular space in a large number, and it is stifled to cause annular space to suppress, and pump pressure raises, and air pressure is suppressed height, and cyclic fluctuation appears in the gas injection pressure shakiness, and well head returns the liquid measure of giving vent to anger and also follows and cyclically-varying occurs, and is serious even stop.
2. inflation under balance pressure drilling technology is very complicated, need make the cave and expensive, excessive risk such as thread a needle, technology consuming time.Simultaneously, can't solve the problem that collapses of connected sum cave well.
3. in order to satisfy the pressure in the coal bed gas inflation under balance pressure drilling and to take the rock requirement, need further optimize gas filling technology, this suitable complexity, loaded down with trivial details, simultaneously, the pressure controlled safety problem of coal bed gas inflation underbalance is a difficult problem of generally acknowledging in the industry always, need the software of specialty just can carry out, increased cost virtually.
4. for evading above-mentioned 3 limitations, adopted two-tube double-cycle process, but do not had to be applied to the pressure monitor system of this technology, made and to carry out effective safety drilling now.
Summary of the invention
In order to overcome the deficiency of existing coal bed gas pressure monitoring device, the invention provides a kind of based on the two bicirculating pressure monitoring systems of sleeve pipe of coal bed gas.
The technical solution adopted for the present invention to solve the technical problems is: based on the two bicirculating pressure monitoring systems of sleeve pipe of coal bed gas, comprise pump red switch dish sensor, flow transmitter, pressure sensor and temperature pick up, it is characterized in that, also comprise data acquisition module, data transmission module, touch sensitive liquid crystal display platform, power supply box and host computer; Be provided with EBI in the described host computer, host computer connects with data acquisition module, data transmission module by EBI; Described data acquisition module and data transmission module connect with pump red switch dish sensor, flow transmitter, pressure sensor, temperature pick up respectively; Described touch sensitive liquid crystal display platform connects with host computer; Described power supply box connects data acquisition module, data transmission module, touch sensitive liquid crystal display platform and host computer respectively.
In conjunction with two-tube pair of circulating drilling technological requirement of coal bed gas, based on the coal bed gas horizontal well easily collapse, characteristics such as bit freezing, drilling tool accident and drill bit accident, supporting and acquisition system is supporting, the data acquisition and processing (DAP) computer by relevant sensor; Wherein measure and the parameter of typing be hook weigh, hook height, TORQ, rotary speed, pump punch speed, standpipe pressure, casing pressure, drilling fluids outlet flow, gas injection rate, wellhead back pressure, tongs moment of torsion, mud pit volume, when boring, well depth, mud temperature, mud density etc.
Native system is equipped with touch sensitive liquid crystal display platform, power supply box, printer, reaches auxiliary equipment, by the Ethernet constructing local network, carries out wire transmission in the well site, and the realization multi-screen is monitored in real time.
Supporting acquisition system adopts the multi-channel data acquisition function, acquisition system hardware mainly comprises various kinds of sensors, data acquisition module, transfer bus, workflow is: sensor is converted to the signal of telecommunication with the field data that collects, reach and carry out A/D conversion, amplification in the data acquisition module, at last, connects with host computer through bus transfer, the monitored data that collects is in real time carried out centralized stores and analysis demonstration, set up being connected of each sensor and monitoring software system.
Further, set up database, comprise that the coal bed gas drilling well gathers dynamic data base in real time, coal bed gas drilling well design and real static database, coal bed gas drilling well standard and the normative database of boring.
Host computer adopts based on the two circulating pressure monitorings of the two sleeve pipes of VB exploitation one cover coal bed gas and control analysis software, and this software comprises the real-time acquisition software of parameter, the two real-time monitoring analysis softwares of circulating pressure of the two sleeve pipes of coal bed gas.And the two real-time monitoring analysis softwares of circulating pressure of the two sleeve pipes of coal bed gas comprise: coal bed gas horizontal well fluid flow parameters analysis module; Coal bed gas horizontal well pit shaft flow parameter analysis module; The monitoring and control analysis module in real time of the two circulating pressures of the two sleeve pipes of coal bed gas.
Native system is used the hardware system of the two circulating pressure monitoring system matching of the two sleeve pipes of coal bed gas based on on-the-spot coal bed gas drilling well actual condition, and the reduction drilling cost utilizes the software kit system to realize on-the-spot real-time monitoring and real-time analysis of creeping into situation.At collapsing of coal bed gas, bit freezing is taken lithology difference equivalent risk, carries out real-time analysis, risk judgement timely.
The invention has the beneficial effects as follows: based on on-the-spot coal bed gas drilling well actual condition, use the hardware system of the two circulating pressure monitoring system matching of the two sleeve pipes of coal bed gas, the reduction drilling cost utilizes the software kit system to realize on-the-spot real-time monitoring and real-time analysis of creeping into situation.At collapsing of coal bed gas, bit freezing is taken lithology difference equivalent risk, carries out real-time analysis, risk judgement timely; Can realize the two circulating pressure monitorings of the two sleeve pipes of coal bed gas and the software and hardware combining of controlling.Can be real-time monitoring and analyzing; The software and hardware combining mode system of building mainly is in order to accomplish real-time, accuracy.By above two systems, realize the two circulating drillings of the two sleeve pipes of coal bed gas are crept into the purpose that condition monitoring is analyzed in real time; Make the technician can predict or detect the risk problem in the drilling well more fast, timely.And risk control scheme fast proposed; Thereby realize the purpose of the two sleeve pipe double circulation safe drilling wells of coal bed gas.This monitoring system has really realized the coal bed gas drilling safety of two sleeve pipe double-cycle process, and is efficient, fast, and the purpose of low cost development.
Description of drawings
Fig. 1 is structural representation of the present invention.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
As shown in Figure 1, based on the two bicirculating pressure monitoring systems of sleeve pipe of coal bed gas, based on the two bicirculating pressure monitoring systems of sleeve pipe of coal bed gas, comprise pump red switch dish sensor, flow transmitter, pressure sensor and temperature pick up, it is characterized in that, also comprise data acquisition module, data transmission module, touch sensitive liquid crystal display platform, power supply box and host computer; Be provided with EBI in the described host computer, host computer connects with data acquisition module, data transmission module by EBI; Described data acquisition module and data transmission module connect with pump red switch dish sensor, flow transmitter, pressure sensor, temperature pick up respectively; Described touch sensitive liquid crystal display platform connects with host computer; Described power supply box connects data acquisition module, data transmission module, touch sensitive liquid crystal display platform and host computer respectively.
Be provided with variable connector and A/D converter in the described data acquisition module.
Be provided with serial ports in the described data transmission module.
Native system is equipped with touch sensitive liquid crystal display platform, power supply box, printer, reaches auxiliary equipment, by the Ethernet constructing local network, carries out wire transmission in the well site, and the realization multi-screen is monitored in real time.
Supporting acquisition system adopts the multi-channel data acquisition function, acquisition system hardware mainly comprises various kinds of sensors, data acquisition module, transfer bus, workflow is: sensor is converted to the signal of telecommunication with the field data that collects, reach and carry out A/D conversion, amplification in the data acquisition module, at last, connects with host computer through bus transfer, the monitored data that collects is in real time carried out centralized stores and analysis demonstration, set up being connected of each sensor and monitoring software system.
Set up database, comprise that the coal bed gas drilling well gathers dynamic data base in real time, coal bed gas drilling well design and real static database, coal bed gas drilling well standard and the normative database of boring.
Host computer adopts based on the two circulating pressure monitorings of the two sleeve pipes of VB exploitation one cover coal bed gas and control analysis software, and this software comprises the real-time acquisition software of parameter, the two real-time monitoring analysis softwares of circulating pressure of the two sleeve pipes of coal bed gas.And the two real-time monitoring analysis softwares of circulating pressure of the two sleeve pipes of coal bed gas comprise: coal bed gas horizontal well fluid flow parameters analysis module; Coal bed gas horizontal well pit shaft flow parameter analysis module; The monitoring and control analysis module in real time of the two circulating pressures of the two sleeve pipes of coal bed gas.
Native system is used the hardware system of the two circulating pressure monitoring system matching of the two sleeve pipes of coal bed gas based on on-the-spot coal bed gas drilling well actual condition, and the reduction drilling cost utilizes the software kit system to realize on-the-spot real-time monitoring and real-time analysis of creeping into situation.At collapsing of coal bed gas, bit freezing is taken lithology difference equivalent risk, carries out real-time analysis, risk judgement timely.
Implementation process is by real-time curve, history curve, three modules of data readback inquiry of monitoring in real time, carries out checking and inquire about, print monitored data, curve.
The image data that all includes this well of real-time monitored in the real-time monitoring module of system, the result of calculation of hydraulic parameters in the annular space, in the drill string, the result of calculation of bottom pressure, circulation pressure drop, annular space pressure drop, drill string internal drop and under-voltage value, the strata pressure curve map of each algorithm predicts, and the bottom pressure alarm threshold such as arranges at function.By these image data, result of calculation, and in conjunction with site engineer's experience can be artificial the bottom pressure alarm threshold is arranged, guarantee that the coal bed gas drilling safety carries out.
The real-time analysis data of system and curve are showed, can offer higher scheme of reliability of site engineer, are conducive to the site engineer and make control decision timely, thereby effectively avoid the risk in the drilling process, improve drilling efficiency.
Claims (3)
1. one kind based on the two bicirculating pressure monitoring systems of sleeve pipe of coal bed gas, comprise, pump red switch dish sensor, flow transmitter, pressure sensor and temperature pick up is characterized in that, also comprise data acquisition module, data transmission module, touch sensitive liquid crystal display platform, power supply box and host computer; Be provided with EBI in the described host computer, host computer connects with data acquisition module, data transmission module by EBI; Described data acquisition module and data transmission module connect with pump red switch dish sensor, flow transmitter, pressure sensor, temperature pick up respectively; Described touch sensitive liquid crystal display platform connects with host computer; Described power supply box connects data acquisition module, data transmission module, touch sensitive liquid crystal display platform and host computer respectively.
2. according to claim 1 a kind ofly it is characterized in that based on the two bicirculating pressure monitoring systems of sleeve pipe of coal bed gas, be provided with variable connector and A/D converter in the described data acquisition module.
3. according to claim 1 a kind ofly it is characterized in that based on the two bicirculating pressure monitoring systems of sleeve pipe of coal bed gas, be provided with serial ports in the described data transmission module.
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| US7578350B2 (en) * | 2006-11-29 | 2009-08-25 | Schlumberger Technology Corporation | Gas minimization in riser for well control event |
| CN102354141A (en) * | 2011-07-12 | 2012-02-15 | 宝鸡航天动力泵业有限公司 | Mining remote control system for coal bed fracturing |
| CN102540992A (en) * | 2010-12-14 | 2012-07-04 | 中国石油天然气股份有限公司 | Remote intelligent measurement and control system, method and terminal for coal-bed methane wells |
| CN102704908A (en) * | 2012-05-14 | 2012-10-03 | 西南石油大学 | Split-flow automatic control system of coal bed methane horizontal branch well and process thereof |
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2013
- 2013-06-27 CN CN2013102591389A patent/CN103277083A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7578350B2 (en) * | 2006-11-29 | 2009-08-25 | Schlumberger Technology Corporation | Gas minimization in riser for well control event |
| CN102540992A (en) * | 2010-12-14 | 2012-07-04 | 中国石油天然气股份有限公司 | Remote intelligent measurement and control system, method and terminal for coal-bed methane wells |
| CN102354141A (en) * | 2011-07-12 | 2012-02-15 | 宝鸡航天动力泵业有限公司 | Mining remote control system for coal bed fracturing |
| CN102704908A (en) * | 2012-05-14 | 2012-10-03 | 西南石油大学 | Split-flow automatic control system of coal bed methane horizontal branch well and process thereof |
Non-Patent Citations (3)
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| 梁海波等: "煤层气充气欠平衡安全钻井监控系统", 《自动化与仪表》 * |
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| 裴红等: "基于GPRS的数据采集与监控系统设计及应用", 《微计算机信息》 * |
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Application publication date: 20130904 |