Express Method to Estimate Target Bottomhole Pressure in Pumping Oil Well

Хасанов, М. К.; Khabibullin, Rinat; Musabirov, Timur; Sokolov, S. S.; Krasnov, Vitaly

doi:10.2118/171303-ms

Cited by 2 publications

(1 citation statement)

References 12 publications

(17 reference statements)

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“…The problem with the evaluation of formation pressure in wells was considered by many authors [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. All the procedures proposed in the above-mentioned papers have found their practical application and provide verified results within some specific accuracy.…”

Section: Introductionmentioning

confidence: 99%

Procedure to Evaluate Current Formation Pressure in Wells with ESP

Gribennikov¹,

Balandin²,

Astaf'ev³

2018

IJET

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While operating the wells with ESP it's impossible to make the direct measurement of the formation pressure with the use of bottom-hole pressure gauge. That is why they presently use various indirect methods to evaluate formation pressure that are based upon the recalculation of static fluid level in well annulus for the fluid column pressure. The authors consider the procedure to evaluate formation pressure that was designed for the wells equipped with ESP. This procedure is a simple one and enables to perform real-time formation pressure metering. The obtained results have been compared with hydro-dynamic studies and have demonstrated their high convergence.

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Section: Introductionmentioning

confidence: 99%

Procedure to Evaluate Current Formation Pressure in Wells with ESP

Gribennikov¹,

Balandin²,

Astaf'ev³

2018

IJET

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New Methodology for Calculating the Impact of High Free Gas Content in the Flow on ESP Characteristics for the West Siberia Fields

Goridko

Khabibullin

Verbitsky

et al. 2021

Day 3 Thu, October 14, 2021

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One of the most common complications in the operation of wells with electric submersible pumps (ESP) is the presence of free gas in the produced well product. The work considers a model of ESP operation taking into account a large share of free gas in the flow obtained on the basis of bench tests and its applicability for analyzing the operation of real producing wells equipped with ESPs. Tests of ESP5-50 (118 radial stages) with model gas-liquid mixtures in a wide range of inlet gas volume-flow rate (0-60%), inlet pressure (0.6-2.1 MPa), shaft speed (2400-3600 rpm) with simultaneous pressure measurement along the pump length and direct measuring of power at the shaft by means of motor weights were performed at the oilfield development and operation department. Mathematical model is obtained by means of regression analysis of experimentally received characteristics of ESPs on gas liquid mixtures; a simple engineering method of calculating the degradation of ESPs characteristics by flow, head and power is suggested. The experience of building similar models described in the literature was taken into account. Experimental studies and creation of a mathematical model of ESP were carried out during Kirill Goridko's PhD thesis. As a result of the research we obtained the degradation dependencies of the pump's delivery and the head of ESP while pumping mixtures of different foam capacity, which simulate the pump operation in low and high watercut wells. The patterns of delivery and head coefficients depending on the zone (left, optimum, right) of ESP characteristic are revealed. The degradation of ESP power during pumping gas liquid mixture is clarified, which allows to calculate more accurately the specific energy consumption of well products lifting. The developed method of recalculation of the pressure and power characteristics of ESPs is implemented in the form of calculation modules designed for engineering calculations in oil production. The proposed tool has been tested on the data of the Western Siberia fields while analyzing the operation of wells with high gas content in the produced product. Calculation modules have been made publicly available. A new simple engineering method was developed to account for the degradation of the pressure and flow and power characteristics of ESPs for low- and medium-rate wells based on a large number of benchmark studies. Оbtained degradation dependences are programmed in the form of calculation modules, which allows to analyze the operation of a large number of wells on the basis of their technological mode, as well as to propose optimization measures to change the ESP operation at a higher level.

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Express Method to Estimate Target Bottomhole Pressure in Pumping Oil Well

Cited by 2 publications

References 12 publications

Procedure to Evaluate Current Formation Pressure in Wells with ESP

Procedure to Evaluate Current Formation Pressure in Wells with ESP

New Methodology for Calculating the Impact of High Free Gas Content in the Flow on ESP Characteristics for the West Siberia Fields

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