Construction of Oil and Gas Wells on Land and Sea

The third article of the series «The technologies of well drilling with casing or liner» is presented to readers attention. The article is devoted to the history of the drilling technology with liner (DwL) technology development, with both uncontrolled and controlled system, that allows a well trajectory control. The article describes the trends that influenced the technology development; examples of some methods’ application and limitation are given. The authors of the article propose to develop a DwL directional small-diameter system using retrievable telemetric control system.

Keywords: drilling with casing (DwC); drilling with liner (DwL); circulation equivalent density; retrievable telemetric system; plastering effect; retrievable downhole motor; pilot drill bit; single-use disposable assembly.

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UDC 622.24.05

ANALYSIS AND PROPOSALS ON EFFECTIVE APPLICATION
OF «PDC» DRILL BITS IN PJSC «TATNEFT» FIELDS (p. 15)

Lilia Bulatovna Khuzina,

Aliya Faritovna Shayhutdinova,

Bulat Ayratovich Khuzin

Almetyevsk State Oil Institute (ASOI)

2, Lenin str., Almetyevsk, 423450, Republic of Tatarstan, Russian Federation,

e-mail: lhyzina@yandex.ru, alia.ingener@mail.ru

The article presents the results of the analysis of the use of PDC (Polycrystalline Diamond Compact) drill bits while drilling under a conductor and a production column, conducted by PJSC «Tatneft». After examining and analyzing the drill bits data, obtained from 220 wells drilled in PJSC «Tatneft» sites, some problems, one of which is the severe wear of «PDC» drill bits cutting assemblies when crossing the different-hardness rocks such as limestones, dolomites with petrified remains inclusions, sandstones, argillites, siltstones, which represent the geological section of the Ural-Volga region, are identified. Herewith, one of the authors’ solutions aimed at increasing the efficiency of wells drilling in PJSC «Tatneft» using «PDC» bits suggests including an oscillator-turbolizer in the assembly of the drill-string bottom zone developed at the Drilling department of ASOI. The use of the oscillator-turbolizer in the assembly allows creating a bottom-hole pulsating flow of the washing liquid, contributes to the elimination of the hanging of the rock cutting tool thus increasing the drilling mechanical rate and «PDC» drill bits operational life.

Keywords: «PDC» drill bit; geological section; conductor; production column; drilling mechanical rate; efficiency; BHA; oscillator-turbolizer.

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UDC 628.143

USE OF A VARIABLE-DIAMETER COUPLING MANUFACTURED
FROM SOME MATERIAL WITH MEMORY AS A CONNECTING ELEMENT
ON FIELDS FLOWLINES (p. 20)

Ivan Nikolaevich Andronov,

Ekaterina Vladimirovna Semitkina

Ukhta State Technical University

13, Рervomayskaya str., Ukhta, 169300, Republic of Komi, Russian Federation,

e-mail: iandronov@mail.ru

A great number of field flowline systems is currently operated in our country. Annually these systems are subjected to accidents, caused, as a rule, by corrosion. The operational life-time of almost half of all new steel pipes when operated in the oil industry hardly reaches five years. Annual repairs of such systems require more than thousands of kilometers of pipes what makes more than 300 thousand tons of steel.

A pipeline during operation is subjected to different types of stresses: mechanical stress (deformation), wear-out and corrosive environment. This combination of stresses can lead to accelerated corrosion – mechanical failure of pipelines.

Technological problems of pipeline systems strength and reliability are quite diverse. Well, many of them can be solved by improving the quality of pipelines design and construction, use of new, more updated design and technological solutions, perfection of technologies and methods of technical maintenance and operation.

The purpose of this study is to develop a method of variable-diameter couplings design, manufactured from EPF material to connect ground fields flowlines with ground shut-off valves, with increased resistance to aggressive environments.

Keywords: design; coupling; memory effect; field flowline; mechanical stresses; corrosion damage.

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UDC 622.276.7

TERMS AND CONDITIONS OF APPLICATION OF A COILED TUBING UNIT (CTU)
COMBINED WITH AN UKPN-10 PORTAL-TYPE MAST TO REPAIR WELLS
IN PJSC «TATNEFT» (p. 28)

Fanzat Zavdatovich Ismagilov

PJSC «TATNEFT»

7, Lenin str., Almetyevsk, 423450, Republic of Tatarstan, Russian Federation,

e-mail: tnr@tatneft.ru

Lilia Bulatovna Khuzina,

Anatoly Fedorovich Slivchenko

Almetyevsk State Oil Institute (ASOI)

2, Lenin str., Almetyevsk, 423450, Republic of Tatarstan, Russian Federation,

e-mail: lhyzina@yandex.ru

This article describes the use of a hybrid coiled tubing unit with an UKPN-10 portal-type mast, its composition, operating principle, the main technical data, the requirements for the preparation of wells for repair using this installation. The factors of economic efficiency, advantages and disadvantages as well as the used literature are noted.

Keywords: coiled tubing setting; repair of wells.

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UDC 622.244.4.06

WAVE TECHNOLOGY FOR PREPARATION OF DRILLING WASHING LIQUIDS (p. 31)

Vadim Yuryevjch Artamonov,

Stanislav Rivnerovich Ganiev,

Yury Sergeevich Kuznetsov,

Andrey Petrovich Pustovgar,

Danir Rizifovich Sultanov

Institute of Mechanical Engineering, RAS

4, Maliy Haritonevsky per., Moscow, 101990, Russian Federation,

e-mail: sultanov.d.r@yandex.ru

Alexey Timofeevich Koshelev

Kuban State Technological University

2, Moskovskaya str., Krasnodar, 350072, Krasnodar territory, Russian Federation

The results of complex studies of wave technologies influence on the physical-mechanical properties of finely-dispersed suspensions (in particular drilling muds) carried out in the laboratory conditions of the NC LMWT IMASh RAS and in field conditions are presented. It is shown that wave treatment by flow-type hydrodynamic generators with tangential and radial channels and by flat-type generators with cylindrical bodies of flow resulted in substantial increase of the dynamic shear stress, the number of 1…2 μm particles in the solution has grown 2,5 times. This means that the wave treatment of the clay suspension causes colloidal fraction increase, and, consequently, to the solution quality raise, to a several times decrease of the time required for the drilling mud preparation as compared with the conventional technology. It is shown that the main contribution to achieving high efficiency of wave treatment is made by nonlinear wave and cavitation processes occurring in the flowing part of hydrodynamic generators.

Keywords: wave technologies; wave field; reservoir characteristics; formation bottom hole zone; filtration rate.

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UDC 622.24

RESEARCH OF LUBRICATING ADDITIVES INFLUENCE
ON PROBABILITY OF DRILLING EQUIPMENT STICKING (p. 34)

Ivan Vladimirovich Zagvozdin,

Sergey Vladislavovich Kamenskikh

Ukhta State Technical University

9, Рervomayskaya str., Ukhta, 169300, Republic of Komi, Russian Federation,

e-mail: zav_bs@ugtu.net, skamenskih@ugtu.net

Numerous theoretical and pilot studies of various domestic and foreign scientists show that sticking is one of the most often occurred and labor-consuming types of accidents and demands considerable time and money on their elimination. Therefore, the research and the analysis of the causes of occurrence of drilling equipment sticking and their prevention, are, undoubtedly, an urgent problem. Results of laboratory researches conducted to prevent sticking by means of lubricating additives rather often used in drilling operations practice are presented in the article. The conducted laboratory researches included the sticking force determination, the intensity of adhesion and stickiness of a filtration cake depending on the types of drilling liquids and lubricating additives of both domestic and foreign production. The most effective combinations of various types of drilling liquids and lubricating additives to decrease in intensity of drilling equipment sticking are determined.

Keywords: drilling equipment sticking; lubricating additives; sticking force; pressure drop; intensity of adhesion; stickiness of a filtration cake.

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UDC 622.24

DYNAMICS OF PENETRATION OF FILTRATE OF DRILLING
WATER-BASED SYSTEMS INTO A FORMATION (p. 40)

Vasiliy Igorevich Nikitin,

Vera Viсtorovna Zhivaeva

Samara State Technical University

244, Molodogvardeyskaya str., Samara, 443100, Russian Federation,

e-mail: nikitinv@list.ru, bngssamgtu@mail.ru

The article deals with the problem of contamination of a formation bottom-hole zone by the water-based drilling mud filtrate. At the same time, the development of a technique for calculating the volume of the filtrate penetrated into the formation during its initial autopsy was chosen as a research task. Based on a series of experiments, the dynamics of a filter cake formation for clay solutions and a filter film for polymer washing systems formation were analyzed. The methods of constructing mathematical models on the basis of experimental data obtained regression curves that correspond to the filtration process in laboratory conditions, as well as ways to further use these models for real reservoir conditions. The results presented in this article are applicable to the choice of a fluid for opening a reservoir in these mining and geological conditions. Based on the volume of the filtrate penetrated into the formation, subsequent calculations of the well productivity parameters are possible, taking into account the processes of interaction of the filtrate and formation fluid taking place in the pore space.

Keywords: drilling fluid; filter cake; filtration film; law of filtration; filtrate; formation exposing; formation contamination; bottom-hole formation zone; modeling.

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UDC 622.245.422

SUBSTANTIATION OF THE REQUIREMENTS TO CEMENT STONE STRENGTH
FOR OIL AND GAS WELLS (p. 43)

Daniyar Lyabipovich Bakirov,

Andrei Olegovich Belousov,

Vitaly Alexandrovich Burdyuga,

Svetlana Slavovna Svyatukhova

KogalymNIPIneft, a branch of LLC «LUKOIL–Engineering» in Tyumen

143a, Respublika str., Tyumen, 625026, Russian Federation,

e-mail: BakirovDL@tmn.lukoil.com, Belousov_A_V@nipi.ws.lukoil.com, BurdygaVA@tmn.lukoil.com, SvyatuhovaSS@tmn.lukoil.com

The absence of regulated requirements for plugging solutions properties used for isolating the annular space of oil and gas wells requires the development of a special technique to substantiate the cement stone strength. Based on the field data analysis, experimental studies and calculations, the requirements for the cement stone strength are formulated with account of the descending depth of the cemented casing strings, their diameters, as well as the loads on the well support during its construction.

Keywords: cement stone; violation of the contact; load on the well support; strength of the cement stone; casing strings; «self-repairing» systems.

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UDC 622.245

AN EXPRESS METHOD IMPLEMENTATION, APPLIED TO TEST
THERMAL INSULATION PROPERTIES OF THERMALLY-INSULATED LIFT PIPES
IN FIELD CONDITIONS (p. 47)

Andrey Gennadievich Filippov,

Valery Yurievich Artemenkov,

Boris Alexandrovich Erekhinsky

PJSC «Gazprom»

16, Nametkin str., GSP-7, Moscow, 117997, Russian Federation,

e-mail: An.Filippov@adm.gazprom.ru, V.Artemenkov@adm.gazprom.ru, B.Erekhinskiy@adm.gazprom.ru

Alexander Victorovich Sutyrin,

Vitaly Viktorovich Vasilevsky,

Kim Alexandrovich Polozkov

LLC «Gazprom VNIIGAZ»

PO Box 130, Moscow, 115583, Russian Federation,

e-mail: A_Sutyrin@vniigaz.gazprom.ru, V_Vasilevskiy@vniigaz.gazprom.ru, K_Polozkov@vniigaz.gazprom.ru

Rudolf Grigorievich Karlov

LLC «Sedatek»

2, bld. 1, apartment XXXVI, room 1, 1A, Novodmitrovskaya str., Moscow, 127015, Russian Federation,

e-mail: rudolf.karlov@gmail.com

LLC «Gazprom VNIIGAZ» in cooperation with LLC «Sedatech» developed an express method to determine the thermal technical characteristics of thermally insulated elevator pipes (TEP), which allows complex testing (testing) of pipes of various designs both during preparation for their descending into a well and during wells workover.

To successfully apply the developed method, it should necessarily be subjected to both bench tests in laboratory conditions and in the field.

The article presents a scheme of the organization of tests of thermally-insulated elevator pipes in field conditions, their order and methods for processing and interpreting the data obtained.

Keywords: thermal insulation; thermally-insulated elevator pipes; thermal physical properties; permafrost; entrance control; vacuum treatment degree; field trials; fiber optic systems; construction and operation of wells.

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UDC 622.276.04

THE INFLUENCE OF THE PROCESSES OF TRANSIENT VORTICES FORMATION
AND THE RESULTING ALTERNATING LOADS ON THE STRESS STATE
OF THE OFFSHORE OIL AND GAS STRUCTURES (p. 49)

Ivan Viktorovch Starokon

Gubkin Russian State University of Oil and Gas (NRU)

65, bld. 1, Leninsky prosp., Moscow, 119991, Russian Federation,

e-mail: starokon79@mail.ru

This article examines the vortices phenomenon, that occurred due to the steady-state flow of the sea water and the resulting phenomenon of variable hydrodynamic force. The conducted researches allowed to develop a mathematical apparatus for determination of the natural frequencies of supports of the offshore oil and gas structures and to reveal that for all practically relevant flow rates of the seawater, the nature of supports flow is supercritical in nature. Determination of the magnitude and frequency of the effect of a variable hydrodynamic force will allow more accurately evaluate the stress state of the offshore oil and gas structures.

Keywords: offshore oil and gas structures; hydrodynamic forces; formation and breakdown of vortices; frequency of vortices breakdowns.

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UDC 622.24

ANALYSIS OF INFLUENCE OF VARIOUS ICE LOADS
ON A STATIONARY CAISSON-TYPE PLATFORM (p. 53)

Victoria Viktorovna Gabova,

Dmitry Alexandrovich Kim,

Anastasia Eduardovna Morozova

Volgograd State Technical University (Volgograd STU), Institute of Architecture and Construction

1, Akademicheskaya str., Volgograd, 400074, Russian Federation,

e-mail: gabovavv@yandex.ru, kiko34rus@yandex.ru, anastasiamorozova93@gmail.com

This article considers the workloads that have the greatest impact on the design of offshore stationary platforms, that are characteristic of severe climate. The calculation of ice loads and its further analysis are made.

Keywords: offshore stationary platform; survival mode; field operation; ice hummocks.

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THE EIGHTIETH ANNIVERSARY SINCE THE BIRTH-DATE
OF ALEXEY TIMOFEEVICH KOSHELEV! (p. 57)

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THE NINETIETH ANNIVERSARY SINCE THE BIRTH-DATE
OF SERGEY AVANESOVICH OGANOV! (p. 58)

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

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