Well stimulation methods

Practical work number 1
"The choice of density of the fluid killing in the repair of wells"
The purpose of the lesson: To learn how to determine the necessary density of the killing fluid during well repair under given geological and technical conditions.

Task number 1: Calculate the required density of the fluid killing when repairing a well under given geological and technical conditions. The initial data for the calculation are presented in table 4.3.
Practical work No. 2
"Choosing a lifting unit for carrying out
repair work "

Purpose of the lesson: Learn how to choose a mobile lifting unit

Task No. 2: Select a mobile lifting unit using the data from task No. 1, as well as the source data for calculating table 4.3.

Practical work No. 3
"Determination of the length of the unattached part of the technological column"

Purpose of the lesson: To learn how to determine the length of an uncaught tubing string.

Task No. 3: In the well with rigging of the 4 × 5 tackle system, drill pipes were stuck. The weight of the drill pipe string in suspension before the grip according to the testimony of GIV-2, was equal to Q (table. 4.4) divisions. The obtained extension of the drill string was l (table. 4.4)
Determine the length of the not stuck part of the drill string. Use the initial data for the calculation from previous tasks, as well as table 4.4.
Table 4.4
The initial data for the calculation
Practical work No. 4
"Determination of the allowable tensile load on the fishing tool in the wells"

The purpose of the lesson: To learn to determine the permissible tensile loads on the fishing tool, as well as the necessary effort when walking the tubing. "

Task: Determine the maximum allowable load on the tube during fishing operations, the allowable tension force when pacing a stuck drill pipe string with a diameter of 89 mm. The initial data for the calculation are presented in table 4.6.
Table 4.6
The initial data for the calculation