PROBLEMS AND PROSPECTIVE OF DEVELOPING SMALL-SCALE SCALE GAS FIELDS

Transcription

1 E01 PROBLEMS AND PROSPECTIVE OF DEVELOPING SMALL-SCALE SCALE GAS FIELDS Presented by Alexander Karasevich,, Doctor of Science, Promgaz, Russia Geneva, Switzerland, 26 January 2006

2 E02 Natural Gas Resources in Russia Distribution of gas fields by reserves АВС 1 +C 2, bln. cu-m % % % % Total number of gas fields Developed Prepared to development Under exploration Small, 689 pcs. (< 40 bln. cu-m) Medium, 34 pcs. (40 75 bln. cu-m) Large, 78 pcs. ( bln. cu-m) Unique, 24 pcs. (> 500 bln. cu-m) Abandoned 168 2

3 E03 Systematization of Small-Scale Scale Fields by Gas Supplying and Utilization 3

4 E04 Territorial Distribution of Small-Scale Scale Field Gas Resources in Russia Reserves, bln. cu-m А+В+С 1 С 2 А+В+С 1 +С 2 Number of fields Total in Rus sia 1597,7 906,4 2504, , , , , , , АВС 1 С 2 390,7 ABC1 +C 2 reserves, bln.cu-m 36 number of fields

5 E05 Reserves and Production Abilities of Small-Scale Scale Fields 1. About 250 fields with total reserves of 2.5 tln m 3 (АВС 1 +С 2 ) can be potential sources of regional and local gas supply. 2. In prospect gas production from small-scale scale fields can reach bln m 3 providing % of gas production growth by At the first stage it is advisable to develop 123 small-scale scale gas fields in Urals, Povolzhskiy and South federal regions (64% of their total number). Their reserves consist of 234 bln m 3 of gas (26%) and 17,1 bln tonn of condensate. 5

6 E06 Problem of Small-Scale Scale Field Development Small extent of resources exploration, necessity of supplementary exploration. Unavailability of standards of integrated designing from bed to consumer. Lack of low productivity modular facilities and suitable development technologies. Relative low profitability not fully compensated geological, technological and financial risks 6 Lock of necessary laws guaranteeing return of investments

7 E07 Factors Reducing Development Eficiency Complexity of mining and geological conditions, low well productivity, small-scale scale resources Complicated composition of hydrocarbon raw material, presence of hydrogen sulfide and other impurities Remoteness from existing pipelines, strong connection with specific consumers used small gas volumes Low wellhead pressure after years of operation 7

8 E08 8 Groups of non-developed Gas Fields I. purely gas fields not required complicated gas conditioning II. III. IV. gas condensate fields with low condensate content (not exceeding 30 g/m 3 ) gas condensate fields with low condensate content and availability of hydrogen sulfide gas condensate fields with high content of condensate (exceeding 30 g/m 3 ) V. gas condensate fields with high content of condensate and availability of hydrogen sulphide VI. gas condensate fields with oil rims VII. gas condensate fields with oil rims and hydrogen sulfide

9 E09 Main Tasks of Small-Scale Scale Gas Field Integrated Development Supplementary exploration of resources Development of standards of integrated designing from bed to consumer Application of best world technologies and creation of low productive modular gas field facilities Creation of favorable investment conditions 9

10 E11 Research and Engineering Works Providing for Integrated Small-Scale Scale Gas Field Development NPV Years Designing Economy Engineering Research & Development 10

11 E12 Main Methodological Principles of Designing Small-Scale Scale Field Integrated Development Provision of long-term steady state production (SSP) and capability margin ensuring peak gas supply Determination of production rate on the basis of technical and economic calculation and terms of gas supply to consumers Ensuring the stable well productivity during SSP and avoiding the operational complications (send production, drowning etc) Ensuring the uniform bed drainage by optimal well location on the surface Substantiation of optimal well construction regarding small gas flow rate; Designing the integrated technological scheme of field development and surface facilities installation in contrast to traditional stage designing 11

12 E13 Improvement of Designing the Integrated Small- Scale Gas Fields Development 1. Overhaul of regulatory procedural base of designing, constructing and operating. 2. Development of new type technical solutions 3. Automation of designing process on the basis of computer technologies 4. Implementation of project management system at all stages including designing, funding, maintenance, construction and commissioning. 5. Creating the data base of technological schemes and designing solutions 12

13 E15 Example of Efficient Small-Scale Scale Field Development in Krasnodar Region 13

14 E16 Structure of Gas Resources Initial Resources 318,8 bln. cu-m Gas and gas condensate fields Gas oil fields 294,7 bln. cu-m ( 92,4 % ) 24,1 bln. cu-m ( 7,6 % ) Undeveloped fields Developed fields 31,9 bln. cu-m ( 10,8 % ) 262,8 bln. cu-m ( 89,2 % ) Residual gas reserves 7,1 bln. cu-m ( 29,5 % ) Accumulated production 17,0 bln. cu-m ( 70,5 % ) Residual reserves Accumulated production 46,2 bln. cu-m ( 17,6 % ) 216,6 bln. cu-m ( 82,4 % ) 14

15 E17 Forecast Production Level by fro m additio n re s e rve s undeveloped fields and prospective areas gas oil fields developed fields Gas Production, mln. cu-м Ye ars

16 E18 Gas Consumption Structure 11 10, ,65 load-area generation 10,45 Energy saving bln. cu-m 9,5 9 9,55 9,35 Small scale gas fields 8,5 8.5 Main pipeline Russia - Turkey % 58% outside gas field inside gas field mazut 9% 59% coal 25% 2% 5% others 25% 2% 5% 16