# Complications and accidents at BNGS PNIPU

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DESIGN WORK
on discipline: "Complications and accidents at BNGS"
Option №7

Completed: st.gr. BNGS-08

Check:
Predein AP

Objective 1.
Determine the relative pressure in the well.
given:
Reservoir pressure, the depth of the productive horizon of the sole.

Objective 2.
Determine the relative pressure in the absorbing horizon.
given:
mud density, the depth of the absorbing horizon, the static level of the mud

Determine the position of the static level in the transition to a greater or lesser density of the solution.
given:
Depth absorbs the horizon, the initial density of the drilling fluid, the static level position when, density of the solution to continue drilling

Determine the density of the liquid to replace the solution in the well with the expectation that the static level was at the mouth.
given:
The depth of the horizon absorbs mud weight, the static level

To determine the intensity of absorption Q, if during the operation the liquid level in the receiving tank has decreased by the amount of area of the bottom of the tank

Determine the ratio absorbs the ability of the pump to feed. Absorption is complete. The static level, the dynamic level

Target 7.
Determine the maximum allowable rate of descent of the drill string.
given:
The diameter of the drill bit with a diameter of drill pipes, reservoir pressure, the density of the drilling fluid, the dynamic viscosity of the drilling fluid, absorb the depth of the horizon.

Target 8.
Determine the amount of water or a weighting agent to increase or decrease the density of the washing liquid volume.
given:
The initial density of the washing liquid, washing liquid density of lightweight, the density weighted washing liquid.

Target 9.
Determine the length of the free part of the drill string, the allowable effort in reciprocating, neutral cross-section allowable number of revolutions of the drill string.
given:
The length of the drillstring, an outer diameter of the drill string, the drill string wall thickness, tensile force, elongation column strength group D.

Target 10.
Calculate the oil bath unit for releasing stuck at the bottom.
given:
Bit diameter, broadening factor, wall thickness, the depth of the well, the outer diameter of the drill pipe, mud density, oil density.

Target 11.
Calculate the liquid bath to eliminate the stuck drill string over the slaughter.
given:
Bit diameter, broadening factor outer diameter drill pipe neprihvachennoy length of column, the length of the drill string, the well depth, the wall thickness, the oil density, the density of the drilling fluid.

Target 12.
On slaughter entered the gas pack and begins to rise at the mouth sealed. Define wellhead, bottom hole pressure at finding a pack at depth.
given:
washing liquid density, the depth of the well, the depth of finding gas packs, gas packs finding depth, formation pressure

Problem 13. Calculate the installation of a cement bridge
given:
Hpg = 2000m; hw = 10m; ρbr = 1390kg / m3; ρtsr = 1820kg / m3; l0 = 0,7 m; m = 0.5; hpg = 20m; Dtr = 146mm; δ = 0.01 m; Dd = 395,3mm, Cap = 0.4; hts = 10m; K = 1.15; a = 3%;

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