Well con­struc­tion super­vi­sion

The con­struc­tion of a deep well is a process that is too expen­sive, com­plex, and respon­si­ble to leave entire­ly to the con­trac­tor. The user of sub­soil resources, if they do not have a rel­e­vant edu­ca­tion, spe­cial­ized knowl­edge, and skills, can­not inde­pen­dent­ly assess the qual­i­ty of well con­struc­tion. Drilling process requires con­trol over the abid­ance by the Well Drilling Project and the geo­log­ic and tech­ni­cal design plan of drilling, includ­ing the design of cas­ing columns and the selec­tion of appro­pri­ate steel grades.

It is impor­tant to con­trol the qual­i­ty of cas­ing (cement­ing) of cas­ing columns, the use of appro­pri­ate cement grades, and the qual­i­ty and pro­por­tions of the com­po­nents used in mak­ing the cement slur­ry. Equal­ly impor­tant is the cor­rect selec­tion of drill bits for opti­mal pen­e­tra­tion of a cer­tain type of geo­log­i­cal for­ma­tion. Per­haps the most impor­tant aspect to con­trol dur­ing well drilling is the cor­rect recipe and selec­tion of drilling flu­ids with appro­pri­ate para­me­ters (den­si­ty, vis­cos­i­ty, fil­tra­tion rate, sta­t­ic shear stress, sta­bil­i­ty, hydro­gen con­tent, dai­ly waste).

Incor­rect selec­tion of drilling flu­id recipes can lead to a crit­i­cal sit­u­a­tion in the well (includ­ing lost cir­cu­la­tion, gas kicks, cave-ins and washouts, absorp­tion of drilling flu­id, etc.). Lack of prop­er con­trol over the drilling process often leads to sit­u­a­tions where the well reach­es the pro­ject­ed depth and is con­struct­ed accord­ing to the tech­ni­cal task, but there is no flu­id influx (i.e. ther­mal water, oil, or gas, for which the well was drilled to obtain). The rea­son may not be geo­log­i­cal at all (although geo­log­i­cal rea­sons also often arise), but pure­ly tech­ni­cal — incor­rect selec­tion of drilling flu­id recipes.

To pre­vent the sit­u­a­tions described above and achieve the set results with max­i­mum effi­cien­cy, com­pa­nies that order deep well drilling ser­vices involve a super­vi­sor (usu­al­ly one or two) to mon­i­tor the progress of well drilling work. The super­vi­sor also con­trols the con­sump­tion of fuel and lubri­cants, records unpro­duc­tive time of the drilling crew, detects vio­la­tions of drilling tech­nol­o­gy by the drilling com­pa­ny-con­trac­tor, and records vio­la­tions of occu­pa­tion­al safe­ty and equip­ment rules by the well drilling per­form­ers.

The Insti­tute of Geol­o­gy will offer you the most opti­mal can­di­date to serve as a drilling super­vi­sor at the drilling site of your well, based on the region where your well project is locat­ed, which drilling rig the con­trac­tor is using, and with­in which geo­log­i­cal unit (tec­ton­ic zone) your object is sit­u­at­ed.

For more infor­ma­tion on this or oth­er ser­vices, please con­tact us at +38(044) 465–75-86, +38(067) 286–84-14, or email insgeoua@gmail.com.