IOR 2003 - 12th European Symposium on Improved Oil Recovery

A003 WATER SHUTOFF TECHNOLOGY EMPLOYING GEL-FORMING SYSTEMS Abstract A novel water shutoff technology has been developed to improve the exploitation efficiency of mature oil fields. According to the technology bottom holes of both injection and production wells are treated with thermoreversible gel-forming ROMKA systems. ROMKA systems are based on cellulose ether. They are capable to generate gels in situ. Using inorganic and organic additives one can control the temperature and the time of gelation within the interval of 40 to 120 o C and thereby to adjust them to specific reservoir conditions. During 2001 pilot tests were carried out in

Abstract 12 th European Symposium on Improved Oil Recovery (8-10.09.2003 Kazan Tatarstan Russia) SYSTEMATIC ANALYSIS OF THE CHEMICO-PHYSICAL PROCESSES IN NON-UNIFORM TERRIGENEOUS FORMATIONS T.N.Yusupova (1 2) R.Kh.Muslimov (2 3) U.G.Romanova (1 2) G.V.Romanov (1 2 4) (1) A.E.Arbuzov Institute of Organic & Physical Chemistry Kazan Scientific Centre Russian Academy of Sciences (2) Scientific & Research Centre for Hardlyaccessible Oil & Natural Bitumen Reserves (3) Personnel of the President of the Republic of Tatarstan (4) NII Neftepromkhim Kazan Tatarstan Russia Core material through a cut of the Devonian formations (Romashkino oil field) has been systematically investigated. Filtration characteristics structure of the

IOR 1760 INFLUENCE OF TECHNOGENOUS FACTORS AND PHYSICO-CHEMICAL STIMULATION OF CARBONATE RESERVOIRS 1 1 2 2 F.A. GUBAIDULLIN R.R. IBATULLIN G.F. KANDAUROVA V.M. KHUSAINOV 3 S.V. FIRSOV Address 1 Tatar Oil Research and Design Institute (TatNIPIneft) 32 Djalil Str. 423236 Bugulma Russia 2 OAO Tatneft 3 Kazan Technological State University 68 K.Marks Russia One of structures for performance of works on physico-chemical stimulation of carbonate reservoirs is productive rocks forming Vereiskian Bashkirian and Protvian deposits which coincide respectively with pools 301 302 and 303 of Romashkinskoye field. They are composed of limestones with interlayers of dolomitized limestones and dolomites predominantly

GROUP WATER SHUTOFF EXPERIENCE IN PRODUCING WELLS ON DEPLETED OIL ACCUMULATION U.V. ZEMTSOV 1 ”Kogalym NIPIOIL” Ltd. Improved Oil Recovery Department 15 Drouzhba Narodov Str. 628481 Kogalym Russia Problems concerning migration of associated water restraint in producing oil wells appear particularly sharply when developing accumulation with the application of intense watering. In fact injected water is percolated unproductively through the washed stratum areas. The classic problem solution found mostly often is to inject a thickened or a sealing agent into the injection wells (one or several at once at a nearby distance). In this connection the injected water filtration is

Classification of Technologies for Effect on Oil Reservoirs Khavkine A.Ya. Institute for Problems of Oil&Gas Russian Academy of Sciences (IPOG RAS) Classification of technologies for effect on oil reservoirs gains the primary position both for the industry management and for the specialists. EOR title must be referred not to the technology nature but to the result of its application at the specific object relative to the basic variant. The same can be said to the IOR. Definition of the EOR and IOR as the measures on enhanced oil recovery and measures on improved oil recovery seems to be more correct.

Abstract 1 IOR-99 Evolution of strain-stressed state of saturated porous media under oil recovery Under the oil recovery filtration flows may generate the large gradients of porous pressure which result in tangential components of stress tensors being absent in geostatics. If there are faults and cracks in formation the porous pressure gradients may lead to the shear deformations and as a result the rock movements along the cracks. In the articles [1-3] the influence of the filtration on the seismic activity has been developed and Romashkino (Tatarstan) and Gasley (Azerbaijan) production fields were considered as samples. In this article the

MAGNETIC RESONANCE AND GEOCHEMISTRY TO MARK ACTIVE BEDDING OF HEAVY OIL DEPOSITS IN CARBONATE Bulka G.R. Vinokurova V.V. Uspensky B.V. Khassanova N.M. Sharipova N.S. Ykimov A.S. 1 Kazan State University Kazan Russia; 1 ОАО “RITEK” Moscow Russia ([email protected]) Usual geophysical studies of complicated carbonate oil deposit layer are not optimal to mark active bedding of heavy oil deposit of central part of the east European platform. Complex radio spectroscopy and geochemistry studies of oil-reservoir rock and organic matter were fulfilled for detailed description data of recoverable reserves. The composition and petrophysical properties of the core samples from various zones of

SELECTIVE METHODS OF RESERVOIR STIMULATION FOR ENHANCING OIL RECOVERY V.G.Izotov 1 L.M.Sitdikova 1 A.I.Ivanov 2 A.T.Panarin 2 and N.V.Yuvchenko 2 1 Kazan State University 2 LukOil Petroleum Company; KSU-GeoFac 18 Kremlin St. Kazan 420008 Russia; E-mail: [email protected] Since oil production rates in numerous fields of Western Siberia have started to fall intensive bed stimulation becomes more and more important. A wide range of the existing physical and chemical formation treatment methods mainly affect petroleum hydrocarbons but the structure of the mineral matrix does not usually get adequate attention. However both physical and chemical stimulation can plug up pore channels and

System-unsteady flooding approach Purpose System-unsteady flooding approach is directed to oil recovery enchancement involving mobile low-draining reserves into development displacement front smoothing watering reduction oil production cost decrease. Essence On application of system-unsteady flooding approach system and cyclic waterflooding technologies advantages shows themselves. Cyclic technology mechanisms (gravitational separation capillary substitution) are applicable to reservoir with flushed zones without selective direction to residual oil saturation. Result is rinsing of already flushed regions. System technology concept implementation: 1) simultaneity of bottomhole formation zone treatments in injection and producing wells; 2) mass character of bottomhole formation zone treatments; 3) cycling of bottomhole formation