Kirinskoye GCF-Construction

Fertoing case project of professionalism and equipment capability in 2012 is the integrated engineering support to project construction «Development of the Kirinskoye Gas and Condensate Field. Sakhalin-III».

Project Overview:

The Kirinskoye Gas and Condensate Field located on the northeastern shelf of Sakhalin Island is the top development priority within the Sakhalin III project.  Bringing this field into development will contribute to the creation of favorable conditions for gasification of the Russian Far East and delivery of natural gas and condensate to global markets. The Kirinskoye Field is located in the Sea of Okhotsk 28 kilometers offshore to the east of Sakhalin Island and 15 kilometers to the east of the Lunskoye Field. The sea depth in the area of the field is from 85 up to 90 m.

The facilities of the Kirinskoye Field subsea production complex include 6 wells with underwater wellhead locations, a gathering manifold, a piping and umbilical system and a coast control unit.

The Kirinskoye subsea field includes the following main construction facilities:

  • Cofferdam, collecting pipeline and MEG (monoethyleneglycol) line landfall trench;
  • 1х20” collecting pipeline from shore to manifold (28 km);
  • Shore to manifold infield umbilical (28 km);
  • Shore to manifold 4,5” MEG pipeline (28 km);
  • Manifold;
  • Manifold to wellheads 2x10¾ ” infield flowlines (7 km + 6.2 km);
  • Manifold to wellheads infield umbilicals;
  • Pipe spool tie-in connections to manifold and wellheads;
  • Protective structures for tie-in sections, collecting pipeline end terminations (PLET) and infield flowlines, South and North).

During shipping period of 2012 the following tasks have been successfully completed:

  • Quality control and artificial bedding installation for technical components of the marine production units;
  • Highly-precise subsea positioning of marine production unit technical components (manifolds, spools, in-line tees, pig launchers/receivers, PLETs and well protective covers);
  • Technical subsea support to installation works (slinging/unslinging, technical tie-ins etc.) using WROVs;
  • Constant quality control of subsea production unit development; monitoring, analysis and hydrometeorological forecast onsite (water surface and subsea, layer by layer);
  • Meteorological support to subsea pipeline connection to production unit facilities (subsea spool metrology by photogrammetry and acoustic survey).

Big scope of preparatory work was done in the ports of Shanghai and Singapore where authorized navigational hydrographic and subsea maintenance equipment including WROVs and the deep-water echosounder Kongsberg EM 710 were installed onto multifunctional support vessels.

In a series of engineering works carried by Fertoing without subcontracting during this project photogrammetrical metrology while connecting subsea pipelines with subsea production unit elements is worth special mentioning. The purpose of meteorological research in development and operation of the SPU is to determine, with the required accuracy and reliability, linear and angular parameters of the relative positions, dimensions and deformation of the SPU structure. Metrology Results included:

  • Linear and angular parameters of the determined landmarks and planes in false and absolute grid systems;
  • 3D point cloud;
  • Scaled facility photos, layouts and drawings;
  • Measuring accuracy calculations.

The above mentioned subsea services have never been provided by a Russian company before.

Overall, 60 people were engaged in these works during the year.