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Reservoir deficit sand control well gravel packing degree simulation experiment device and method
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A simulation experiment device, gravel filling technology, applied in earthwork drilling, wellbore/well components, measurement, etc., can solve the problem of not considering multiple rounds of sand production deficit and so on
Active Publication Date: 2021-01-05
CHINA PETROLEUM & CHEM CORP +1
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[0005]
The gravel packing experimental device described in the above-mentioned patent mainly focuses on pre-packing and cyclic packing, that is, the gravel layer is only formed in the annulus of the oil casing, and does not consider the multiple rounds of sand production in the bottom-hole reservoir of the sand production well that has been exploited for a long time Deficit situation
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Embodiment 1
[0060] Such as figure 2 As shown, a gravel packing sand control well extrusion filling form simulation experiment method, taking the extrusion filling construction of a loose sandstone block as an example, includes the following steps:
[0061] (1) Determine the experimental process parameters and prepare experimental materials according to the target work area
[0062] (1.1) Determine the experimental material parameters:
[0063] The viscosity of the sand-carrying fluid is 28-38mPa.s, the size of the filling gravel is 0.425-0.85mm, and the filling gravel type is quartz sand;
[0064] (1.2) Determine the experimental parameters:
[0065] Gravel packing volume 6m 3 , 2 sand mixing tanks with a sand ratio of 15%, 3 sets of filling pumps with a displacement of 1.5m 3 / min;
[0066] (1.3) 3D printing production of visualized stratum deficit simulation components: the median particle size of stratum sand is 0.15mm, the type of stratum sand production is continuous collapse, ...
Embodiment 2
[0079] Such as figure 2 As shown in Fig. 1, a simulation experiment method of extrusion filling form of gravel packing sand control well, taking the extrusion filling construction of a loose sandstone block as an example, includes the following steps:
[0080] (1) Determine the experimental process parameters and prepare experimental materials according to the target work area
[0081] (1.1) Determine the experimental material parameters:
[0082] The viscosity of the sand-carrying fluid is 25-30mPa.s, the size of the filling gravel is 0.5-0.65mm, and the type of filling gravel is quartz sand;
[0083] (1.2) Determine the experimental parameters:
[0084] Gravel packing volume 6m 3 , 2 sand mixing tanks with a sand ratio of 25%, 3 sets of filling pumps with a displacement of 3.0m 3 / min;
[0085] (1.3) 3D printing production of visualized stratum deficit simulation components: the median particle size of stratum sand is 0.15mm, the type of stratum sand production is cont...
Embodiment 3
[0098] An experimental method for simulating the extrusion filling form of a sand control well with gravel packing, taking the extrusion filling construction of a loose sandstone block as an example, includes the following steps:
[0099] (1) Determine the experimental process parameters and prepare experimental materials according to the target work area
[0100] (1.1) Determine the experimental material parameters:
[0101] The viscosity of the sand-carrying fluid is 30-35mPa.s, the size of the filling gravel is 0.6-0.8mm, and the type of filling gravel is quartz sand;
[0102] (1.2) Determine the experimental parameters:
[0103] Gravel packing volume 6m 3 , 2 sand mixing tanks with a sand ratio of 20%, 3 sets of filling pumps with a displacement of 2.0m 3 / min;
[0104] (1.3) 3D printing production of visualized stratum deficit simulation components: the median particle size of stratum sand is 0.15mm, the type of stratum sand production is continuous collapse, and the ...
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Abstract
The invention discloses a reservoir deficit sand control well gravel packing degree simulation experiment device. The reservoir deficit sand control well gravel packing degree simulation experiment device comprises a simulationwellboresystem, a packing simulation system, a waste liquid recoverysystem and a pressure measurementsystem, wherein the simulation wellbore system comprises a simulation stratum boundary, a simulation wellbore, a simulation casing pipe, a simulation oil pipe and a visual stratum deficit simulation component; and the packing simulation system comprises a water tank,a sand mixing tank, a packing pump and a simulation packing pipe column installed in the simulation wellbore. The invention further discloses a reservoir deficit sand control well gravel packing degree simulation experiment method. The reservoir deficit sand control well gravel packing degree simulation experiment device and method can highly simulate the stratum condition that sand production deficit exists in a plurality of rounds due to long-time mining of an oil well, the change rule of the gravel layer packing degree under the condition of different gravel packing construction parametersand the distribution characteristics of gravel in a deficit reservoir are obtained through research, and a basis is provided for optimization of the construction scheme and the technological parameters of gravel packing operation under different deficit conditions.
Description
technical field [0001] The invention relates to the technical field of gravel filling simulation experiments, in particular to a simulation experiment device and method for the degree of gravel filling of sand prevention wells with insufficient reservoirs. Background technique [0002] The so-called sand production refers to the phenomenon that formation sand particles are produced to the wellbore or the ground along with the formation fluid during the exploitation of oil and natural gas loose sandstone reservoirs and natural gashydrate reservoirs; sand control is currently the main way to solve the sand production problem. [0003] At present, the commonly used sand control technology is: use gravel to form a sand retaining barrier between the sand control screen and the oil layer by extrusion packing, which is used to block the formation sand. At present, most oil and gas wells in unconsolidated sandstone oilfields on land are in the middle and late stages of production, ...
Claims
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