CN105178953B - Determine the device and method of hydrate reservoir decomposition rate in drilling process - Google Patents

Determine the device and method of hydrate reservoir decomposition rate in drilling process Download PDF

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CN105178953B
CN105178953B CN201510657687.0A CN201510657687A CN105178953B CN 105178953 B CN105178953 B CN 105178953B CN 201510657687 A CN201510657687 A CN 201510657687A CN 105178953 B CN105178953 B CN 105178953B
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hydrate
gas
decomposition
drilling
pressure
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CN201510657687.0A
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Chinese (zh)
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CN105178953A (en
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高永海
孙宝江
李�昊
孙文超
陈野
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中国石油大学(华东)
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Abstract

The invention belongs to construction of natural gas fields field, in particular it relates to a kind of apparatus and method for determining hydrate decomposition rate in drilling process.The device of hydrate reservoir decomposition rate and decomposition of hydrate tolerance in drilling process is determined, including:Hydrate generation resolving cell, auxiliary unit and determination unit.The environmental condition of hydrate reservoir in hydrate generation resolving cell simulation drilling process, for generation and the decomposition of hydrate provide place;Auxiliary unit provides source of the gas and liquid source for the generation of hydrate;The decomposition rate and decomposition tolerance of determination unit measurement hydrate reservoir.During the present invention can be with analogic drilling, output gas situation after the decomposition of hydrate layer reservoir and its decomposition, for evaluating deepwater drilling safety.

Description

Determine the device and method of hydrate reservoir decomposition rate in drilling process

Technical field

The invention belongs to construction of natural gas fields field, in particular it relates to a kind of determine hydrate reservoir decomposition in drilling process The apparatus and method of speed.

Background technology

As a kind of important marine energy, gas hydrates have that reserves are larger, energy density is higher, bury compared with The advantage such as shallow, distribution is wider, is the preferable alternative energy source of traditional coal, petroleum-based energy.The U.S., Russia, Canada, moral The development and location of gas hydrates is in succession national science and technology strategic high ground by the country such as state, Japan and South Korea, has been put into big The manpower and material resources of amount, have carried out a series of primary studies, and achieve certain achievement.China is also in eighties of last century foot couple day Right gas hydrate is studied, and efficiently extracting natural gas hydrate is considered as into a long term object.

During efficiently extracting natural gas hydrate, drilling well is the important step that can not be lacked.Due to gas water Compound itself has special phase equilibrium properties, therefore is very different with general hydrocarbon formations drilling well, and such strata drilling will More complicated heat and moisture transfer problems can be faced.Such as, in natural gas hydrate stratum drilling process, drilling fluid and reservoir Heat transfer, the friction between drill bit and rock, the borehole wall and bottomhole can lift the temperature of whole system;And with drill bit not Breaking of rod well, strata pressure can also fluctuate.Temperature and the change of pressure, may cause the decomposition of gas hydrates.Wherein, ground Play cementing or skeletal support solid-state decomposition of hydrate in layer, in the moisture diffusion for decompositing to stratum, be easily caused Cave-in.Meanwhile, escaping gas not only have impact on the proportion and rheological characteristic of drilling fluid, easily trigger the accidents such as blowout, well kick, During returning to ground on drilling fluid, more there is circulation of drilling fluid pipeline and preventer etc. and form hydration again Thing, the normal drilling of influence, triggers the risk of drilling failure.

It is accurate to understand the situation that drilling process causes hydrate reservoir to decompose in order to reduce the loss that these risks are brought, Sum up corresponding Changing Pattern and assess influence degree of the decomposition of hydrate gas for well control, become vital ring Section.Traditional method for numerical simulation, the hypothesis being related to is more, and reality is quite different, it is impossible to the actual water of true reflection Compound layer situation.In recent years, scholar takes up, in design simulation experimental provision, indoors under environment, to enter hydrate layer Row actual monitoring, but do not simulate drilling process, the grinding of drill bit and the circulation of mud are to system temperature and hydrate The influence of phase transformation, also not by decomposition of hydrate situation and decompose after produce gas flow measure with analysis, and these Parameter is the important security parameter for ensureing hydrate layer drilling.

For above-mentioned situation, it is necessary to design a kind of device, carry out decomposition of hydrate situation under the conditions of appraisal drilling, calculate water Compound decomposition rate and output tolerance, for hydrate layer safety drilling provides basic condition.

The content of the invention

To overcome the defect existing for prior art, the present invention to provide a kind of hydrate reservoir in determining drilling process and decompose The apparatus and method of speed, the theoretical research and field operation that hydrate reservoir is drilled for deep water is safe and efficient provides technology branch Hold.

To achieve the above object, the present invention uses following technical proposals:

The device of hydrate reservoir decomposition rate and decomposition of hydrate tolerance in drilling process is determined, including:Hydrate is given birth to Into resolving cell, auxiliary unit and determination unit.The ring of hydrate reservoir in hydrate generation resolving cell simulation drilling process Border condition, for generation and the decomposition of hydrate provide place;Auxiliary unit provides source of the gas and liquid source for the generation of hydrate;Determine The decomposition rate and decomposition tolerance of unit measurement hydrate reservoir.

Relative to prior art, beneficial effects of the present invention are as follows:In can simulating drilling process, hydrate layer decompose and Output gas situation after its decomposition, for evaluating deepwater drilling safety.Specifically include:

1st, the affecting laws of the solution to decomposition of hydrate of variety classes and concentration can be studied;

2nd, hydrate layer electrical impedance, pressure, the measurement of temperature in drilling process can be realized, decomposition of hydrate amount is estimated;

3rd, can study that drill bit under drilling condition is rotated, mud circulation etc. is to the affecting laws of decomposition of hydrate amount;

4th, can be with different power auger speed, drilling fluid system in analog study hydrate reservoir drilling process for hydrate The influence of output tolerance is decomposed, drilling safety is ensured.

Brief description of the drawings

Fig. 1 is the apparatus structure schematic diagram for determining hydrate reservoir decomposition rate in drilling process;

In figure, 101, insulating box, 102, reactor, 103, air admission hole, 104, steam vent, 105, inlet opening, 106, resistance Anti- sensor, 107, temperature sensor, 108, rig, 109, sealing device, 110, drilling rod, 111, drill bit, 112, support, 113, Slush pump, 114, flowmeter, 115, check valve, 201, vavuum pump, 202, vacuum meter, 203, gas cylinder, 204, constant pressure constant speed Pump, 205, priming device, 301, pressure regulator valve, 302, gas/liquid separator device, 303, closed draining container, 304, weighing device, 401st, the first liquid storage container, the 402, second liquid storage container, the 403, the 3rd liquid storage container, the 501, first control valve, the 502, second control Valve processed, the 503, the 3rd control valve, the 504, the 4th control valve, 601, first pressure sensor, 602, second pressure sensor, 603, 3rd pressure sensor, the 604, the 4th pressure sensor.

Specific embodiment

As shown in figure 1, determining the device of hydrate reservoir decomposition rate and decomposition of hydrate tolerance in drilling process, bag Include:Hydrate generation resolving cell, auxiliary unit and determination unit.It is hydrated in hydrate generation resolving cell simulation drilling process The environmental condition of thing reservoir, for generation and the decomposition of hydrate provide place;Auxiliary unit provides source of the gas for the generation of hydrate With liquid source;The decomposition rate and decomposition tolerance of hydrate in determination unit measurement reservoir.

Hydrate generates resolving cell, including:Insulating box 101, reactor 102, rig 108, the first liquid storage container 401; Reactor 102 is placed with insulating box 101, the top of insulating box 101 is fixed with support 112, rig 108 is placed with support 112, The lower end of rig 108 is connected with drilling rod 110, and drill bit 111 is installed in the lower end of drilling rod 110, and the tip exterior ring of drilling rod 110 has sealing device 109;The drilling speed of rig 108 is adjustable, and for simulation drilling process provides power, drilling rod 110 and drill bit 111 are used to simulate drilling process, Sealing device 109 ensures the sealing in drilling process.

First liquid storage container 401 is connected through sealing device 109 by the first feed-line with the top of drilling rod 110, and first On feed-line slush pump 113, flowmeter 114 and check valve are sequentially provided with from the first liquid storage container 401 to the direction of drilling rod 110 115;First liquid storage container 401 contains DWM liquid, and DWM liquid is extracted by slush pump 113 and measured by flowmeter 114 Actual flow enters into drilling rod 110, and check valve 115 controls the flow direction of DWM liquid.

Quantitative husky, stone is placed in the ratio and distribution of setting in reactor 102, reactor 102 is the generation of hydrate Reservoir environment is simulated with decomposing, insulating box 101 controls the temperature of reaction system;The top of reactor 102 is provided with air admission hole 103, enters Fluid apertures 105, steam vent 104, steam vent 104 are placed in the middle, and drilling rod 110 passes through to enter in reactor under steam vent 104, the He of air admission hole 103 Inlet opening 105 is located at the both sides of steam vent 104.

Reactor 102 is provided with the 3rd pressure sensor 603, electric impedance sensor 106, temperature sensor 107, the 3rd pressure Sensor 603, electric impedance sensor 106, temperature sensor 107 are connected with computer data processing system;3rd pressure is passed Real-time pressure in the measurement reactor 102 of sensor 603, real-time electrical impedance, temperature in the measurement reactor 102 of electric impedance sensor 106 Real time temperature in the measurement reactor 102 of sensor 107, computer data processing system is used to gather, store and analyze in real time Pressure, temperature, electrical impedance data, judge that hydrate generates decomposition situation, using pressure, temperature data meter using electrical impedance data Calculate the decomposition rate of hydrate in drilling process.

Auxiliary unit, including:Vavuum pump 201, vacuum meter 202, gas cylinder 203, constant pressure constant speed pump 204, priming device 205;Vavuum pump 201 is connected by the second feed-line with air admission hole 103, from vavuum pump 201 to air inlet on the second feed-line The direction of hole 103 is sequentially provided with the first control valve 501 and vacuum meter 202;Vavuum pump 201 is used to be vacuumized in reactor 102, profit The flowing of gas, situation about being vacuumized in the measurement reactor 102 of vacuum meter 202 are controlled with the first control valve 501.

Gas cylinder 203 is connected by the 3rd feed-line with air admission hole 103, from gas cylinder on the 3rd feed-line The direction of 203 to air admission hole 103 is sequentially provided with the control of constant pressure constant speed pump the 204, the 3rd valve 503, second pressure sensor 602;High pressure There are required gases at high pressure, such as methane in gas cylinder 203, for hydrate generation resolving cell provides source of the gas, by constant pressure constant speed pump 204, by gas boosting to preset value input reactor 102, the flowing of gas, second pressure are controlled using the 3rd control valve 503 Sensor 602 measures the actual pressure of gas.

Priming device 205 is connected by the 4th feed-line with the inlet opening 105 on reactor 102, the 4th feed-line On from priming device 205 to the direction of inlet opening 105 be sequentially provided with first pressure sensor 601, second control valve 502;Fluid injection is filled Put 205 to be made up of fluid connection device and manual pump, fluid connection device contains required configuration solution, manually pump will configure molten Liquid is injected into reactor 102;Using the flowing of the second control control injection solution of valve 502, first pressure sensor 601 is measured Inject the real-time pressure of solution.

Determination unit, including:Pressure regulator valve 301, gas/liquid separator device 302, closed draining container 303, weighing device 304th, the 3rd liquid storage container 403.

Steam vent 104 is connected by the 5th feed-line with gas/liquid separator device 302, from exhaust on the 5th feed-line Hole 104 to the direction of gas/liquid separator device 302 is sequentially provided with the 4th pressure sensor 604, the control valve of pressure regulator valve 301 and the 4th 504;Real-time pressure in the measurement reactor 102 of 4th pressure sensor 604, adjusts pressure regulator valve 301 by the reality in reactor 102 When pressure maintain required fixed value, the flowing of the 4th control control discharge gas of valve 504, by gas/liquid separator device The fluid of discharge is carried out gas-liquid separation by 302.

The bottom of gas/liquid separator device 302 is provided with fluid apertures, and fluid apertures passes through the 6th feed-line and the phase of the second liquid storage container 402 Even;Second liquid storage container 402 contains the liquid isolated.

The upper end of gas/liquid separator device 302 is provided with stomata, and stomata passes through the 7th feed-line and closed draining container 303 Top is connected.

Closed draining container 303 is connected by the 8th feed-line with the 3rd liquid storage container 403, and the 8th feed-line is stretched into The inner chamber of closed draining container 303 and near bottom, the 3rd liquid storage container 403 is placed on weighing device 304, weighing device 304 with Computer data processing system is connected;The volume of the gas after drainage measures gas-liquid separation of closed draining container 303, the 3rd Liquid storage container 403 is used to contain the water of drainage discharge, the quality of the measurement discharge water of weighing device 304, computer digital animation System is used to gathering, store and analyzing real-time qualitative data.

The method for determining hydrate reservoir decomposition rate and decomposition of hydrate tolerance in drilling process, is bored using said determination The device of hydrate reservoir decomposition rate and decomposition of hydrate tolerance, comprises the following steps that during well:

1st, the temperature of adjusting apparatus, pressure, simulating hydrate generation

Quantitative husky, stone is placed in the ratio and distribution of setting in reactor 102, to simulate corresponding reservoir environment, Close all valves of whole device;

Open first and control valve 501, open vavuum pump 201, the gas in extraction kettle 102, until vacuum meter 202 is read Number is negative;

Vavuum pump 201 is closed, first is closed and is controlled valve 501;

The solion of prescribed concentration is configured, is put into the fluid connection device of priming device 205;

Open second and control valve 502, rotate the manual pump in priming device 205 and be injected into reactor 102 by solution is configured It is interior, the rotating speed of manual pump is adjusted by observing the pressure reading of first pressure sensor 601 in injection process, observe and record liquid Volume reading on body linker, until the volume reading on the pressure reading of first pressure sensor 601 and fluid connection device reaches To preset value, stop operating manual pump, closes second and controls valve 502;

The temperature of insulating box 101 is adjusted to preset value, reactor 102 is heated, until the actual temperature of insulating box 101 is read Number change is less than ± 0.01 DEG C;

The 3rd control valve 503 is opened, constant pressure constant speed pump 204 is opened, specified pressure is set, by gas in gas cylinder 203 Convey into reactor 102, observe and record second pressure sensor 602, the 3rd pressure sensor 603, electric impedance sensor 106th, the real time readouts of temperature sensor 107, continue gas injection, until second pressure sensor 602, the 3rd pressure sensor 603 are read Number reaches preset value, and electric impedance sensor 106, the reading of temperature sensor 107 tend towards stability, i.e. hydrate in reactor 102 After generation completely under preset pressure, close the 3rd and control valve 503, close constant pressure constant speed pump 204;

2nd, drilling process, supplemental characteristic during collection decomposition of hydrate are simulated

Configuration mud is simultaneously put into the first liquid storage container 401, opens slush pump 113, and mud is circulated to being injected inside drilling rod 110 Slurry, using flowmeter 114 and the Monitoring and Controlling mud flow rate of check valve 115 and flow direction;

Weighing device 304 is opened, and carries out return-to-zero;

The 4th control valve 504 is opened, by adjusting pressure regulator valve 301, the reading of the 4th pressure sensor 604 is maintained solid Definite value P is constant, and the gas discharged after gas-liquid separation is collected using drainage, until reading no longer changes on weighing device 304, I.e. decomposition of hydrate completely, is closed the 4th and controls valve 504;

It is dt to set Minimum-time and be spaced 0.001~0.002s, and record weighing device 304 is in every section of Minimum-time interval dt Interior reading m1

The power supply of rig 108 is opened, adjustment drilling speed to setting value drives drilling rod 110 and drill bit 111, so as to simulate drilling well Journey;

3rd, calculate different condition under hydrate real-time decomposition speed

Reading m of the record weighing device 304 in every section of Minimum-time interval dt1, can be converted by below equation in a row Water law discharges the volume of liquid:

In formula, V1--- the volume of discharge liquid;

m1--- the quality of discharge liquid;

ρ1--- the density of discharge liquid;

Separate heel row and go out the volume of gas and be:

V2=V1

In formula, V1--- the volume of discharge liquid;

V2--- separate the volume that heel row goes out gas;

The amount for separating the material that heel row goes out gas is calculated by below equation:

In formula, V2--- separate the volume that heel row goes out gas;n2--- separate the amount that heel row goes out gaseous matter;ρ2--- point Go out the density of gas from heel row;M2--- separate the molecular mass that heel row goes out gas.

If the knots modification of the amount of discharge gaseous matter is dn in the dt times2, then the real-time decomposition speed of hydrate can by with Lower formula is calculated:

In formula, u2--- the real-time decomposition speed of hydrate;

Dt --- setting Minimum-time is spaced 0.001~0.002s;

dn2--- the knots modification of the amount of gaseous matter is discharged within the dt times.

By regulating thermostatic case 101, change the temperature of reaction system, carry out multi-pass operation, research temperature is to hydrate point The influence of solution.

By adjusting constant pressure constant speed pump 204, change the pressure of reaction system, carry out multi-pass operation, research pressure is to hydration The influence that thing is decomposed.

By adjusting rig 108, change the rotating speed of drill bit 111, carry out multi-pass operation, research drill speed is to hydrate point The influence of solution.

By adjusting the pump speed of slush pump 113, multi-pass operation, influence of the research discharge capacity to decomposition of hydrate are carried out.

By adjusting the temperature in the first liquid storage container 401, multi-pass operation is carried out, study DWM liquid implantation temperature pair The influence of decomposition of hydrate.

Prepare the concentration of solution in injection device 205 in fluid connection device by changing, carry out multiple 11 operation, study molten Influence of the liquid concentration to decomposition of hydrate.

Prepare the ionic species of solution in injection device 205 in fluid connection device by changing, carry out multi-pass operation, study Influence of the solion species to decomposition of hydrate.

Claims (3)

1. it is a kind of determine drilling process in hydrate reservoir decomposition rate device, including:Hydrate generation resolving cell, auxiliary Unit and determination unit, it is characterised in that:The environment bar of hydrate reservoir in hydrate generation resolving cell simulation drilling process Part, for generation and the decomposition of hydrate provide place;Auxiliary unit provides source of the gas and liquid source for the generation of hydrate;Determination unit Measure the decomposition rate of hydrate reservoir and decompose tolerance;
Hydrate generates resolving cell, including:Insulating box, reactor, rig, the first liquid storage container;It is placed with insulating box anti- Kettle is answered, insulating box top is fixed with support, rig is placed with support, rig lower end is connected with drilling rod, and drilling rod lower end is installed and bored Head, drilling rod tip exterior ring has sealing device;Rig drilling speed is adjustable, and the first liquid storage container is by the first feed-line through sealing Device is connected with drilling rod top, and slush pump, flow are sequentially provided with from the first liquid storage container to drilling rod direction on the first feed-line Meter and check valve;
Quantitative husky, stone is placed in the ratio and distribution of setting in reactor, insulating box controls the temperature of reaction system;Reactor Top is provided with air admission hole, inlet opening, steam vent, and steam vent is placed in the middle, and drilling rod air admission hole and is entered by entering in reactor under steam vent Fluid apertures is located at steam vent both sides;
Reactor is provided with the 3rd pressure sensor, electric impedance sensor, temperature sensor, and the 3rd pressure sensor, electrical impedance are passed Sensor, temperature sensor are connected with computer data processing system;
Auxiliary unit, including:Vavuum pump, vacuum meter, gas cylinder, constant pressure constant speed pump, priming device;Vavuum pump is defeated by second Send pipeline to be connected with air admission hole, the first control valve and vacuum are sequentially provided with from vavuum pump to air admission hole direction on the second feed-line Table;Gas cylinder is connected by the 3rd feed-line with air admission hole, from gas cylinder to air admission hole direction on the 3rd feed-line It is sequentially provided with constant pressure constant speed pump, the 3rd control valve, second pressure sensor;
Priming device is connected by the 4th feed-line with the inlet opening on reactor, on the 4th feed-line from priming device extremely Inlet opening direction is sequentially provided with first pressure sensor, the second control valve;Priming device is made up of fluid connection device and manual pump, Fluid connection device contains required configuration solution, and manually pump is injected into solution is configured in reactor;
Determination unit, including:Pressure regulator valve, gas/liquid separator device, closed draining container, weighing device, the 3rd liquid storage container;
Steam vent is connected by the 5th feed-line with gas/liquid separator device, is divided from steam vent to gas-liquid on the 5th feed-line The 4th pressure sensor, pressure regulator valve and the 4th control valve are sequentially provided with from device device direction;Gas/liquid separator device bottom is provided with Fluid apertures, fluid apertures is connected by the 6th feed-line with the second liquid storage container, and the second liquid storage container contains the liquid isolated;Gas-liquid Separator upper end is provided with stomata, and stomata is connected by the 7th feed-line with the top of closed draining container;
Closed draining container is connected by the 8th feed-line with the 3rd liquid storage container, and the 8th feed-line stretches into closed discharge opeing to be held Device inner chamber and close bottom, the 3rd liquid storage container are placed on weighing device, and weighing device is connected with computer data processing system; The volume of closed draining container gas after drainage measures gas-liquid separation, the 3rd liquid storage container is used to contain drainage discharge Water, weighing device measurement discharge water quality, computer data processing system be used for gather, store and analyze real-time quality Data.
2. it is a kind of determine drilling process in hydrate reservoir decomposition rate method, using described in claim 1 determine drilling well The device of hydrate reservoir decomposition rate, comprises the following steps that in journey:
(1), the temperature of adjusting apparatus, pressure, simulating hydrate generation
Quantitative husky, stone is placed in the ratio and distribution of setting in a kettle., to simulate corresponding reservoir environment, is closed whole All valves of device;
Open first and control valve, open vavuum pump, the gas in extraction kettle, until vacuum meter reading is negative;
Vavuum pump is closed, first is closed and is controlled valve;
The solion of prescribed concentration is configured, is put into the fluid connection device of priming device;
Open second and control valve, rotate the manual pump in priming device and be injected into solution is configured in reactor, in injection process The rotating speed of manual pump is adjusted by observing first pressure cell pressure reading, the volume on fluid connection device is observed and record Reading, until first pressure cell pressure reading reaches preset value with the volume reading on fluid connection device, stop operating hand Dynamic pump, closes second and controls valve;
The temperature of insulating box is adjusted to preset value, to reactor heat, until insulating box actual temperature reading change less than ± 0.01℃;
The 3rd control valve is opened, constant pressure constant speed pump is opened, specified pressure is set, gas in gas cylinder is conveyed into reactor In, second pressure sensor, the 3rd pressure sensor, electric impedance sensor, temperature sensor real time readouts are observed and record, hold Continuous gas injection, until second pressure sensor, the 3rd pressure sensor readings reach preset value, and electric impedance sensor, temperature are passed Sensor reading is tended towards stability, i.e., hydrate is closed the 3rd and control valve after generation completely under preset pressure in reactor, is closed permanent Pressure constant speed pump;
(2) drilling process, supplemental characteristic during collection decomposition of hydrate, are simulated
Configuration mud is simultaneously put into the first liquid storage container, opens slush pump, to injecting circulating mud inside drilling rod, using flowmeter and Check valve Monitoring and Controlling mud flow rate and flow direction;
Weighing device is opened, and carries out return-to-zero;
The 4th control valve is opened, by adjusting pressure regulator valve, making the reading of the 4th pressure sensor, to be maintained fixed value P constant, and The gas discharged after gas-liquid separation is collected using drainage, until reading no longer changes on weighing device, i.e., decomposition of hydrate is complete Entirely, close the 4th and control valve;
It is dt to set Minimum-time and be spaced 0.001~0.002s, reading of the record weighing device in every section of Minimum-time interval dt Number m1
Rig power supply is opened, adjustment drilling speed to setting value drives drilling rod and drill bit, so that analogic drilling process;
(3), calculate different condition under hydrate real-time decomposition speed
Reading m of the record weighing device in every section of Minimum-time interval dt1, drainage can be converted into by below equation and discharged The volume of liquid:
V 1 = m 1 ρ 1
In formula, V1--- the volume of discharge liquid;
m1--- the quality of discharge liquid;
ρ1--- the density of discharge liquid;
Separate heel row and go out the volume of gas and be:
V2=V1
In formula, V1--- the volume of discharge liquid;
V2--- separate the volume that heel row goes out gas;
The amount for separating the material that heel row goes out gas is calculated by below equation:
n 2 = V 2 · ρ 2 M 2
In formula, n2--- separate the amount that heel row goes out gaseous matter;V2--- separate the volume that heel row goes out gas;ρ2--- after separation Discharge the density of gas;M2--- separate the molecular mass that heel row goes out gas;
If the knots modification of the amount of discharge gaseous matter is dn in the dt times2, then the real-time decomposition speed of hydrate can be by below equation Calculate:
u 2 = dn 2 d t
In formula, u2--- the real-time decomposition speed of hydrate;
Dt --- setting Minimum-time is spaced 0.001~0.002s;
dn2--- the knots modification of the amount of gaseous matter is discharged within the dt times;
By regulating thermostatic case, change the temperature of reaction system, carry out multi-pass operation, shadow of the research temperature to decomposition of hydrate Ring;
By adjusting constant pressure constant speed pump, change the pressure of reaction system, carry out multi-pass operation, research pressure is to decomposition of hydrate Influence;
By adjusting rig, change the rotating speed of drill bit, carry out multi-pass operation, influence of the research drill speed to decomposition of hydrate;
By adjusting the pump speed of slush pump, multi-pass operation, influence of the research discharge capacity to decomposition of hydrate are carried out;
By adjusting the temperature in the first liquid storage container, multi-pass operation is carried out, research DWM liquid implantation temperature is to hydrate The influence of decomposition;
Prepare the concentration of solution in injection device in fluid connection device by changing, carry out multi-pass operation, study solution concentration pair The influence of decomposition of hydrate;
Prepare the ionic species of solution in injection device in fluid connection device by changing, carry out multi-pass operation, research solution from Influence of the subcategory to decomposition of hydrate.
CN201510657687.0A 2015-10-12 2015-10-12 Determine the device and method of hydrate reservoir decomposition rate in drilling process CN105178953B (en)

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CN106896212B (en) * 2017-02-22 2019-06-21 中国石油大学(华东) Monitor the device of deepwater drilling liquid invasion procedure hydrate reservoir physical property variation
CN107271323B (en) * 2017-07-18 2020-07-31 中国石油大学(华东) Real-time measuring instrument for hydrate decomposition gas
CN109100259B (en) * 2018-08-29 2020-11-13 中国科学院广州地球化学研究所 Shale gas generates analytical equipment
CN109594982A (en) * 2018-12-19 2019-04-09 中国科学院广州能源研究所 A kind of evaluating apparatus and evaluation method of the formation damage containing hydrate
CN109611027B (en) * 2018-12-25 2020-04-28 中海石油(中国)有限公司湛江分公司 Hydrate drilling simulation system and simulation method

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JP2003082372A (en) * 2001-09-10 2003-03-19 Mitsubishi Heavy Ind Ltd Method for forming gas hydrate, and simulation apparatus and simulation system for forming gas hydrate
CN1176741C (en) * 2003-04-01 2004-11-24 中国地质大学(武汉) Comprehensive test equipment for natural gas hydrate
CN101532936B (en) * 2009-04-14 2013-01-09 中国地质大学(武汉) Method and device for evaluating inhibiting ability of drilling fluid on formation and decomposition of hydrate
CN102052065A (en) * 2010-07-01 2011-05-11 青岛海洋地质研究所 Simulation exploiting experiment device for natural gas hydrate
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