LSU PETE 1010 Exam 2 Questions &
Answers (Grade A+)
5 purposes of a drilling fluid -
correct answer ✅1. clean the bottom of the hole
2. cool, clean, and lubricate the drill bit
3. maintain the walls of the hole
4. transport cuttings to the surface
5. prevent entry of formation fluids into the well-bore
measures the density of the drilling fluid in pounds per gallon (ppg)
-
correct answer ✅mud balance
measures the effective filtrate loss into the formation -
correct answer ✅filter press
comes from the filter press - the filter cake represents the solids
that you might expect to build on the well-bore wall. The filter cake
from a good drilling fluid will form a thin impermeable cake on the
well-bore, which will prevent or minimize filtrate loss -
correct answer ✅filter cake
measures the viscosity of the drilling fluid. It is important to have
enough viscosity to carry the cuttings to the surface, but again, if
,LSU PETE 1010 Exam 2 Questions &
Answers (Grade A+)
the viscosity were too high, it would create a whole other set of
problems. -
correct answer ✅VG Meter (Viscometer)
any of several mechanical devices for removing cuttings and other
large solids from the mud. -
correct answer ✅shale shaker
Calculate hydrostatic head (pressure) of column of drilling fluid
(equation) -
correct answer ✅Hh = (0.052 psi)(TVD)(MW)
Calculate mud-weight needed to control formation pressures
(equation) -
correct answer ✅MW = (reservoir pressure)/((0.052)(TVD))
a procedure to recover lost of stuck equipment in the wellbore -
correct answer ✅fishing
unit for mud weight -
correct answer ✅ppg (pounds per gallon)
,LSU PETE 1010 Exam 2 Questions &
Answers (Grade A+)
units for hydrostatic head (pressure) -
correct answer ✅psi
what is the purpose of a filter cake -
correct answer ✅form a thin impermeable cake on the well-bore,
which will prevent or minimize filtrate loss
main purposes of well logging -
correct answer ✅1. detect the presence of hydrocarbons
2. locate abnormal pressure formations
3. determine base of fresh-water formations
4. locate formations for saltwater disposal
well logging in oil and gas exploration is used primarily to detect the
presence of economically producible _____ in the formations
penetrated by a wellbore -
correct answer ✅hydrocarbons
can be used while drilling to determine when abnormally _____
formations are being entered -
correct answer ✅pressured
, LSU PETE 1010 Exam 2 Questions &
Answers (Grade A+)
In and around wells filled with mud, an electric field due to _____
_____ is generated -
correct answer ✅spontaneous potential
Natural potentials develop mainly as a result of having two
electrolytes of different salinities in contact. These two electrolytes
are the _____ _____ and _____ _____ -
correct answer ✅drilling fluid, formation water
The SP log is a recording versus _____ of the difference between
the potential of an electrode lowered in an uncased borehole and a
stationary reference electrode at the surface. -
correct answer ✅depth
The _____ _____ log is a recording versus depth of the difference
between the potential of an electrode lowered in an uncased
borehole and a stationary reference electrode at the surface. -
correct answer ✅spontaneous potential
5 main things we can determine from a spontaneous potential log -
correct answer ✅1. detect permeable beds
2. locate boundaries between beds
Answers (Grade A+)
5 purposes of a drilling fluid -
correct answer ✅1. clean the bottom of the hole
2. cool, clean, and lubricate the drill bit
3. maintain the walls of the hole
4. transport cuttings to the surface
5. prevent entry of formation fluids into the well-bore
measures the density of the drilling fluid in pounds per gallon (ppg)
-
correct answer ✅mud balance
measures the effective filtrate loss into the formation -
correct answer ✅filter press
comes from the filter press - the filter cake represents the solids
that you might expect to build on the well-bore wall. The filter cake
from a good drilling fluid will form a thin impermeable cake on the
well-bore, which will prevent or minimize filtrate loss -
correct answer ✅filter cake
measures the viscosity of the drilling fluid. It is important to have
enough viscosity to carry the cuttings to the surface, but again, if
,LSU PETE 1010 Exam 2 Questions &
Answers (Grade A+)
the viscosity were too high, it would create a whole other set of
problems. -
correct answer ✅VG Meter (Viscometer)
any of several mechanical devices for removing cuttings and other
large solids from the mud. -
correct answer ✅shale shaker
Calculate hydrostatic head (pressure) of column of drilling fluid
(equation) -
correct answer ✅Hh = (0.052 psi)(TVD)(MW)
Calculate mud-weight needed to control formation pressures
(equation) -
correct answer ✅MW = (reservoir pressure)/((0.052)(TVD))
a procedure to recover lost of stuck equipment in the wellbore -
correct answer ✅fishing
unit for mud weight -
correct answer ✅ppg (pounds per gallon)
,LSU PETE 1010 Exam 2 Questions &
Answers (Grade A+)
units for hydrostatic head (pressure) -
correct answer ✅psi
what is the purpose of a filter cake -
correct answer ✅form a thin impermeable cake on the well-bore,
which will prevent or minimize filtrate loss
main purposes of well logging -
correct answer ✅1. detect the presence of hydrocarbons
2. locate abnormal pressure formations
3. determine base of fresh-water formations
4. locate formations for saltwater disposal
well logging in oil and gas exploration is used primarily to detect the
presence of economically producible _____ in the formations
penetrated by a wellbore -
correct answer ✅hydrocarbons
can be used while drilling to determine when abnormally _____
formations are being entered -
correct answer ✅pressured
, LSU PETE 1010 Exam 2 Questions &
Answers (Grade A+)
In and around wells filled with mud, an electric field due to _____
_____ is generated -
correct answer ✅spontaneous potential
Natural potentials develop mainly as a result of having two
electrolytes of different salinities in contact. These two electrolytes
are the _____ _____ and _____ _____ -
correct answer ✅drilling fluid, formation water
The SP log is a recording versus _____ of the difference between
the potential of an electrode lowered in an uncased borehole and a
stationary reference electrode at the surface. -
correct answer ✅depth
The _____ _____ log is a recording versus depth of the difference
between the potential of an electrode lowered in an uncased
borehole and a stationary reference electrode at the surface. -
correct answer ✅spontaneous potential
5 main things we can determine from a spontaneous potential log -
correct answer ✅1. detect permeable beds
2. locate boundaries between beds
