Application of horizontal wells to accelerate commissioning of wells and to increase development efficiency of offshore oil and gas fields in the Northern Caspian

UDK: 622.276.1/.4.04
DOI: 10.24887/0028-2448-2018-1-72-76
Key words: Northern Caspian, horizontal well, field development system, well pattern, simulation
Authors: V.Yu. Alekperov (LUKOIL PJSC, RF, Moscow), N.N. Lyashko (LUKOIL PJSC, RF, Moscow), A.V. Gavura (LUKOIL-Engineering LLC, RF, Moscow), I.B. Fedotov (LUKOIL-Engineering LLC, RF, Moscow), I.A. Kibalenko (LUKOIL-Engineering LLC, RF, Moscow)

Based on oil and gas fields discovered by LUKOIL PJSC, a new oil-producing region of the Russian Federation is being formed in the northern part of the Caspian Sea. To increase the technical and economic efficiency of field development under the conditions of technical, technological and environmental restrictions at sea, and to overcome adverse mining and geological conditions of occurrence of petroleum reserves, a proposal of a large-scale application of field development systems with horizontal wells was put forward.

The article describes the main results of the development of the Kravtsovskoye (D-6) oil field discovered in 1983 and set by the Company in 2004 into the operation and located in the Baltic Sea. The entire production well stock, implemented at the field, consists of wells with horizontal wellbores. At the Neocomian and Volgian deposit of Yu. Korchagin (Northern Caspian) field, set into operation in 2010, all production wells have a horizontal completion as well. The length of several wellbores along the reservoir reaches 4,900 m.

The operational experience obtained from these development targets became the basis for project solutions for new fields in the Northern Caspian. At the largest production target of this region - the Neocomian deposit of V. Filanovsky field - production drilling was started in August 2016. All project production wells and injection wells (except for one) of this deposit are horizontal ones.

To develop other production targets of the V. Filanovsky field (Aptian and Albian), all exploitation targets of the satellite deposits (Rakushochnoye field, S. Kuvykin field, 170 km field), the development strategy with horizontal wells has also been planned. Their feasibility and efficiency are demonstrated by detailed simulation using modern methods and tools and confirmed by the conclusions of the state expertise.    

Based on oil and gas fields discovered by LUKOIL PJSC, a new oil-producing region of the Russian Federation is being formed in the northern part of the Caspian Sea. To increase the technical and economic efficiency of field development under the conditions of technical, technological and environmental restrictions at sea, and to overcome adverse mining and geological conditions of occurrence of petroleum reserves, a proposal of a large-scale application of field development systems with horizontal wells was put forward.

The article describes the main results of the development of the Kravtsovskoye (D-6) oil field discovered in 1983 and set by the Company in 2004 into the operation and located in the Baltic Sea. The entire production well stock, implemented at the field, consists of wells with horizontal wellbores. At the Neocomian and Volgian deposit of Yu. Korchagin (Northern Caspian) field, set into operation in 2010, all production wells have a horizontal completion as well. The length of several wellbores along the reservoir reaches 4,900 m.

The operational experience obtained from these development targets became the basis for project solutions for new fields in the Northern Caspian. At the largest production target of this region - the Neocomian deposit of V. Filanovsky field - production drilling was started in August 2016. All project production wells and injection wells (except for one) of this deposit are horizontal ones.

To develop other production targets of the V. Filanovsky field (Aptian and Albian), all exploitation targets of the satellite deposits (Rakushochnoye field, S. Kuvykin field, 170 km field), the development strategy with horizontal wells has also been planned. Their feasibility and efficiency are demonstrated by detailed simulation using modern methods and tools and confirmed by the conclusions of the state expertise.    



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