PDC bits are widely used for wells drilling. One of the main problems of PDC bits operation at a well bottom is the transverse force arising from the interaction of the bits cutting structures with the rock. The cause of this force is the imbalance in bits’ cutting structures design, which is understood as the uneven force and power loading of PDC cutters. To study the force and power loading of PDC bits cutters installed in individual sections of a bit profile, an experimental bench is designed and built. When drilling a rock block by PDC bit cutters, the bench allows to measure and digitally record three mutually perpendicular components of the load on the cutter during reproduction of the given section of the bit profile. The article describes the bench, including a detailed description of the strain gauge, which measures three components of the load on PDC cutter, presents the calibration procedure and the resulting calibration dependencies as well as an assessment of the systematic error in the measurement of the forces.

Keywords: PDC bits; imbalance of bits’ cutting structure design; PDC cutters; experimental bench; three mutually perpendicular load components on the cutter; strain gauge; calibration dependencies; systematic error.

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UDC 622.276.5 DOI: 10.30713/0132-2222-2018-3-11-14

QUARTER-WAVE ACOUSTIC RESONATORS USED IN OIL PRODUCTION (p. 11)

Yu.M. Ovchinnikova

"Tyumen Industrial University"

38, Volodarsky str., Tyumen, 625000, Russian Federation

The article describes the possibility of using quarter-wave acoustic resonators as sensors of monitoring parameters of drilling parameters and downhole equipment operation. The test procedure to confirm the operability of the proposed method and technical means is presented.

Keywords: acoustic resonator; technological noise; sound; well; oil; quality factor; telemetry; hydro-siren; turbodrill.

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UDC 681.2.08+681.121.1 DOI: 10.30713/0132-2222-2018-3-15-17

The prospects of USE of "XL-80" laser interferometer,
DEVELOPED BY THE "Renishaw" COMPANY, as a measuring element
in the state special STANDARD of Length unit (level)
OF ThE FIRST digit (p. 15)

Vadim Shamilevich Bikkulov, engineer,

Alexander Viktorovich Kondakov, Cand. of chemical sci., the Head of the Department

"All-Russian Scientific-Research Institute of Flow Measurement" ("VNIIR")

7a, Vtoraya Azinskaya str., Kazan, 420088, Republic of Tatarstan, Russian Federation,

tel./fax: 8 (906) 121-59-58, (843) 272-61-26, (843) 272-54-55,

e-mail: vniir.nio-7@yandex.ru

Iraisema Frometa Planche, student

Kazan National Research Technological University

68, K. Marx str., Kazan, 420015, Republic of Tatarstan, Russian Federation,

e-mail: iraisemafrometaira@hotmail.com

The article presents an overview of the measuring system of the State special standard of length unit (level) of the first digit on the basis of the "XL-80" laser interferometer.

Keywords: liquid level measuring device; level measurement; liquid level standard; level gauge.

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UDC 681.5.08+622.279 DOI: 10.30713/0132-2222-2018-3-18-23

DEVELOPMENT AND RESEARCH OF ELECTRONIC CONVERTERS
OF INCLUSIONS REGISTRATION CHANNELS IN THE GAS AND
GAS CONDENSATE WELL PRODUCT FLOW (p. 18)

Oleg Viktorovich Ermolkin, Dr. of tech. sci., Professor,

Yanina Dmitrievna Popova, post-graduate student,

Anatoly Vladimirovich Gorokhov, Cand. of tech. sci., assistant professor

Gubkin Russian State University of Oil and Gas (NRU)

65, Leninsky prosp., Moscow, 119991, Russian Federation,

tel.: +7 (499) 507-81-82,

e-mail: ove@gubkin.ru, yanina.zykova@yandex.ru, iis@gubkin.ru

The article is dedicated to the development and research of electronic converters of registration channels of water and sand inclusions in the flow of gas and gas-condensate wells production used in the information and measuring systems of "Potok" ("Flow") series. Such electronic converters are designed for output signals processing of the primary measuring converter (MC), that provides recording turbulence fluctuations, caused by the movement of a high-velocity flow of gas-liquid mixture via a narrowing device as well as fluctuations that are the result of the particles shock impact on the device body. The description of the developed electronic block as well as the results of a complex research together with the primary measuring converter on the specialized experimental installations, allowing to simulate water and sand-air flows of different adjustable ratios of air and inclusions is presented. Special attention is paid to the results of the study of the thermostability characteristics of the updated primary measuring converter and electronic blocks. The obtained technical solutions are practically confirmed during construction of "Potok" measuring systems of new generation, that differ from the previous ones by wider operational characteristics.

Keywords: multiphase flows; information measuring systems; spectral flow-rate measuring method; flow-rate of water and sand inclusions; temperature stability.

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UDC 681.2 DOI: 10.30713/0132-2222-2018-3-24-27

control of measuring channels Reliability In THE system
of supervisory Control and DATA acquisition (SCADA)
OF A gas transportation COMPANY (p. 24)

Mikhail Sergeevich Ulyanov, post-graduate student,

Victor Vladimirovich Yuzhanin, assistant professor

Gubkin Russian State University of Oil and Gas (NRU)

65, Leninsky prosp., Moscow, 119991, Russian Federation,

e-mail: M_Ulyanov_11@mail.ru, vyuzhanin@mail.ru

This article considers the problem of showings reliability of pressure measuring channels in main gas transportation systems. The developed method of control over of the reliability of indications of pressure measuring channels showings in close places is presented. The algorithm for showings reliability control is realized in the form of a software package.

Keywords: measuring channel; reliability; hydraulic regularities; equal pressure unit.

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UDC 681.5:622.276 DOI: 10.30713/0132-2222-2018-3-28-34

METHODS OF ACID FRACTURING SIMULATION (p. 28)

Regina Dmitrievna Kanevskaya, Dr. of tech. sci., Professor, Head of the Chair,

Alexey Viktorovich Novikov, post-graduate student

Gubkin Russian State University of Oil and Gas (NRU)

65, Leninsky prosp., Moscow, 119991, Russian Federation,

tel.: + 7-985-999-28-38, + 7-915-137-40-13,

e-mail: pmkm2014@yandex.com, cranon@yandex.ru

Acid fracturing is a relatively simple and inexpensive technique of oil recovery enhancement from carbonate formations, which has become widespread by now. The modeling of acid fracturing is often approached from the same positions as to the modeling of proppant fracturing despite the fact that the mechanisms of a high-conductivity channel formation are significantly different. During the acid fracturing, this channel is formed due to the rock dissolution by the acid penetrating into the thickness of the formation through the walls of the previously created fracture. Modern simulators believe that the reaction occurs on the surface of the crack and the calculation of its conductivity is based on various empirical correlations, which can be unreasonable and insufficient for reliable estimation. The article analyzes various modern approaches to modeling the acid flow along a fracture and methods of its conductivity estimation. These approaches are primarily based on various correlations that take into account the compressive stresses of the formation, the time required for the acid contact with fracture margins, mineralogical and petrophysical heterogeneities of the rock, and other factors.

Keywords: acid fracturing; carbonate formation; the Berman problem; convection-diffusion equation; conductivity of the crack that is the result of acid fracturing; the Nierode-Kruk correlation; Deng-Mou correlation; large-scale models of acidic effects.

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UDC 681.5:553.98 DOI: 10.30713/0132-2222-2018-3-35-40

A DISTRIBUTION METHOD OF THE SPECIFIED GAS PRODUCTION
AMONG THE WELLS OF A GAS-CONDENSATE FIELD FOR ENHANCING
GAS-CONDENSATE RECOVERY (p. 35)

Irina Alexandrovna Trubacheva, post-graduate student,

Alexander Iosifovich Ermolaev, Dr. of tech. sci., Professor, Head of the Chair,

Alexander Anatolievich Nekrasov, senior lecturer

Gubkin Russian State University of Oil and Gas (NRU)

65, Leninsky prosp., Moscow, 119991, Russian Federation,

tel.: +7 (926) 876-27-07, +7 (916) 575-67-92, +7 (916) 910-29-51,

e-mail: flameollaria@mail.ru, aier@gubkin.ru, nekrass@yahoo.com

Statements and algorithms to be applied for solving the problem of optimal distribution of the specified amount of gas-condensate production among the wells of a gas-condensate field are proposed. Different variants of the initial state of the gas-condensate field (the initial reservoir pressure is either higher, lower or equal to the condensation starting pressure) are studied. An example is given that illustrates the application of the proposed approach to the specified problems salvation. It is shown that the proposed algorithms, in contrast to the optimization methods implemented in hydrodynamic simulators, provide a significant time reduction, while allowing an approximate solution close to optimal one.

Keywords: algorithm; gas; flow rate; condensate recovery; hydrodynamic modeling; optimization; well; simulator; equation.

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UDC 622.279:681.5 DOI: 10.30713/0132-2222-2018-3-41-45

EVALUATION OF THE EFFECT OF THE LIQUID AND CONSTRICTION DEVICES
ON THE GAS-WELLS FLOW-RATE (p. 41)

Elena Vladimirovna Mandrik, junior researcher,

Sergey Alexandrovich Melnikov, Cand. of geol.-mineral sci., Head of the Laboratory,

Alexander Alexandrovich Ploskov, Cand. of tech. sci., Head of the Sector,

Vladimir Igorevich Shulyatikov, Cand. of tech. sci., leading researcher

LLC "Gazprom VNIIGAZ"

15, bld. 1, Proektiruemy proezd No 5537, Razvilka poselok, 142717, Leninsky municipal district, Moscow region, Russian Federation,

tel.: 8-963-994-03-54, 8-926-370-18-85, 8-926-212-39-23, 8-903-527-11-11,

e-mail: Elena_Mandrik@bk.ru, S_Melnikov@vniigaz.gazprom.ru, plos-kov86@yandex.ru, V_Shulyatikov@vniigaz.gazprom.ru

S.G. Pamuzhak

LLC "Gazprom dobycha Yamburg"

9, Geologorazvedchikov str., Novy Urengoy, 629306, Yamal-Nenets autonomous district, Russian Federation

Gas flow-rates measurements at the vast majority of gas wells of the Cenomanian deposits are missing. The existing methods of gas production determination (based on the results of GDI, etc.) are erroneous and incorrect. The liquid presence in the system of a reservoir-gas gathering network, typical for the final stage of the development, distorts the estimated characteristics of the wells and leads to the incorrect determination of the gas flow rates and impossibility of the operational control and management of such wells. The aim of the paper is to assess the differences between the real gas flow rates and the calculated values as well as the effect of various types of constriction devices used to measure gas flow rates on the pre-operational characteristics of the wells. As a result, it is established that the gas flow rates (calculated and real ones) can differ by several times. Constriction devices influence on the wells flow rates has been estimated, the gas wells flow-rate limitation can reach about 3 %. It has been found out that gas wells flow-rate is less restricted when using constriction devices like the Venturi meter. The results of the article can be used at the stages of designing and reconstruction of gas production objects.

Keywords: liquid effect; constriction devices; gas wells flow-rates; pressure drop.

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EXHIBITIONS. SYMPOSIA. CONFERENCES
(p. 46)

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JSC "ALL-RUSSIAN SCIENTIFIC-RESEARCH INSTITUTE OF ORGANIZATION, MANAGEMENT AND ECONOMICS OF OIL AND GAS INDUSTRY"

Main page of journal

EXHIBITIONS. SYMPOSIA. CONFERENCES (p. 46)

EXHIBITIONS. SYMPOSIA. CONFERENCES
(p. 46)