問題一覧
1
Identify the stresses in this diagram
1 Tangential (Hoop) Stress 2 Axial Stress 3 Radial Stress
2
Rock Mechanics can be defined as: "The theoretical and applied science of the mechanical behavior of rock to the force fields of its physical environment."
true
3
Pumps off measurements are useful to........? Не 100%
Reduce supercharging, Reduce noise in measurement
4
Acquiring enough pressure data in a given reservoir layer at virgin pressure can provide information on fluid density. *
True
5
The Mechanical Earth Model (MEM) is not a numerical representation of all Geomechanical knowledge available for a field or basin.
False
6
Which of the following is the best definition of hydrostatic pressure?
Pressure exerted by the weight of the static column of fluid
7
Which of these QC parameters are indicative of high-quality formation pressure reading? *
Repeatabilty of Investigation and Final Build Up, 60sec slope stability of <0.1
8
- ??? On a normal compaction trend, as the compaction increases with TVD... * не факт - наверное без денсити
the porosity decreases, the pore pressure increases, the density increases
9
Why is flowline decompression important?
To ensure the drawdown goes below formation pressure
10
Which of the following cannot cause a change in the downhole annular dynamic pressure *
Incorrect tracking of depth by the MWD engineer
11
Match the description to the diagram. (Для стето 475 сначала Micro Sapphire, потом ACQG)
1 Equalization Valve 2 Pretest Chamber 3 Strain Gauge 4 ACQG 5 Probe
12
Which of the following is not true about differential sticking?
.. a condition in which the drill string joints are stuck together due to increased torque during makeup., ... a condition in which the bit gets stuck in soft formations., ... the process of sticking the pin into the box during a connection.
13
When going from vertical to horizontal the mud weight window would generally
Become narrower
14
Fill in the blank in the statement below: If a formation is a......... the pressure in the formation is greater than the pressure exerted by a column of water at that same depth.
Over Pressured
15
Drilling practices, such as wiper trips, that are often considered as routine, are sometimes detrimental to wellbore stability. Minimizing wiper trips does not help suppress actions that are sensitive to mechanical agitation of the formation such as mobile formations / sloughing shales, weak planes. *
False
16
Match the correct definitions to the terms below: 1. Angular Cavings 2. Splintered Cavings 3. Tabular Cavings
1 .. are a consequence of breakouts. 2 ... have two nearly-parallel faces with plume structures. 3 .. are the result of natural fractures or weak planes.
17
Which of the following is the best definition of formation pore pressure?
Pressure of the fluid contained in the pore spaces of sediments or other rocks
18
Differential sticking refers to .....
... a condition in which the drill stem becomes stuck against the wall of the wellbore because part of the drill stem has become embedded in the filter cake formed on the side of the hole.
19
Which of the following can cause a change in the downhole annular dynamic pressure:
Increase in the ROP with insufficient hole cleaning, Mud engineer actively changing mud weight, Moving up/down the drill string at different speeds
20
Which of the following is WL Formation Pressure measurement tool
MDT
21
Which department in the Client's office can use SWFT data for their analysis?
Drilling engineers, Geologists, Reservoir engineers, Production engineers
22
The PSDM visited the drilling department in Shell office. During the meeting the PSDM attempted to convince the Drilling Engineering supervisor to use StethoScope. Which of the following StethoScope measurement/service can the PSDM use to sell during the meeting?
StethoScope can help in the casing point optimization
23
StethoScope can be used for well placement application?
True
24
The Sales Engineer along with the Domain Champion visited the client office for StethoScope sell up opportunity. Which of the following measurements or services can they sell to the client using the StethoScope 675 tool?
Reservoir fluid identification, Oil to water contact, Mobility, Mud weight optimization
25
The Client Geologist expected tar layer during drilling the 6 1/8 inch section. They asked what could be the expected mobility for the tar layer (heavy oil)
Very low
26
ExxonMobil reservoir management team asked for StethoScope advantages over Wireline pressure tools. List all the advantages to sell StethoScope to the client
Real Time drilling optimization , Geosteering, Reduce drilling risk
27
Which one of the fixed pretests is the shortest?
D test
28
Which one of the following is NOT a module of the StethoScope tool?
Pump Module
29
Which of the following MWD tools is the StethoScope 675 compatible with?
TeleScope
30
How many setting pistons are there on a StethoScope 675 tool?
1
31
Which one of the fixed pretests is the least aggressive?
A test
32
The graph below shows a pressure profile taken during a test. What was the result of this test?
Pressure did not stabilize during the build up
33
Which of the following best describe the super charging effect on the StethoScope measurement?
Supercharging is increasing the pressure of the formation immediately around the wellbore due to overbalanced drilling
34
How many different types of fixed pretests are available on a StethoScope tool?
4
35
Overburden stress at a given depth depends only on the weight of the matrix of the overlaying sediments
False
36
Which are indications that the formation pressure is close to the borehole pressure?
Kicks (flow from well), increase in gas level, splintered cavings at the shakers, increase in torque and drag
37
The lower the formation permeability, the higher is the supercharge effect
True
38
The StethoScope tool is:
A single probe designed tool
39
Horizontal and vertical pore pressure prediction models can be used
When over-pressure is due to under compaction only
40
Splintered cavings is an indication that the borehole pressure is less than the formation pressure
True
41
Name the zone of the formation in which the StethoScope does the formation pressure measurement
Invaded zone
42
A high quality mudcake will reduce the amount of supercharge effect in a given formation
True
43
One important application of the StethoScope is to determine the fluid contacts. A typical pressure gradient for water is ...
0.43
44
The thicker the mudcake is the better it is to minimize formation damage
Fasle
45
Which of the following statements is true about formation breakdown pressure?
It is the borehole pressure required to initiate a fracture in the formation