SKC Undip

1. Sharing Knowledge Class
DETAILED DRILLING
Presented by:
Arif Fajar Utomo
L2C008118

2. INTRODUCTION
So, first well oil
Thein almost every part in the is started in the
What is Drilling? well drilling world, the drilling
story of successfully drilled is the Drake
method 1850s using way one, and that be
Well atisthe dawn of industrial verifyit Drilling
1800s,ongoes for only rotaryCable revolution and
Drilling the the a to Tool can a
implemented in drilling
Method when quite different withbetter
at the timewhich people needoil, gas, also the
petroleum reservoir probably something water,
exists, the
geothermal, to get the read by.
nowadays commonly drilling Responding to
than candle to work andand mine.method: The
only way petroleum, petroleum from the
Rotary Drilling Methods.
the demand for reliable lighting, companies and
reservoir.
people started to find and produce oil lamps
that were brighter than candles, and the best oil
lamps went for petroleum (in the 1854).

3. ROTARY DRILLING
There are several a use about between thethe like
In rotary, we knew that to suspend rotary
rig uses differences the drilling bit
Rotary rig doesn’t bit cable isn’t anything fluid
drilling and the crew forItthe circulating teeth or
system rotary cable one,has differences bit in
in hole,(also named members rows ofthe are to
cable-tool’s chisel bit. the attach system),
the drill tool, they use deviceshollow pipe and it
in cable bit, a cutting a manual system.
other types of long string of the bits, the way
end of the placement of that penetrate the
move, and and use ofdriven by the rotary table.
moves in the way the drilling fluids.
formationrotarythen scrape or gouge out pieces
of it as the rig system rotates the bit.

4. Normal Drilling Operation
In normal drilling operation, we simply divide
the process into several steps. That are :
The attachment of the drilling apparatus into
the hole.
The drilling process.
Casing and Cementing
The Final Preset Depth Test
Well Completion

5. The attachment of the drilling apparatus
into the hole
In this phase, the drilling crews place the drill
bit, the drill collar, and the drill pipe and then
attach it with kelly and put it on the turn
table, then we begin to drill the hole.

6. The Drilling Process
The drilling process refers to the drilling itself. In
this phase the drill bit will move in a rotary
motions and begin to cuts up the rock
formation. As the drilling progresses, the drilling
crews circulate the mud through the pipe in
order to push the rock cuttings out of the hole.
This will continue, until the preset depth is being
reached.

7. Casing and Cementing
After cementing, we
The primary cementingis being first cementing
In the the we do testingis the reached, things
Whenthat,preset depthknow two methods, the
towards the result of
the need to is to and the squeeze test varies
process cementing run the casing cementing
primary we cementing process. Thethe do the
we primarydo in the hole (betweenand outside
from hardness properties, alignment,
diameter hand hand.
that goes of Thecasing and of the casing is the
cementing. thein purpose inner diameter of and to
proper the hole from the good enough, stick
hole)
preventsealing. If the result iscollapsing. To then
we casing with the the we use cement. The
the don’t have to dohole, squeezing cementing,
and if it we use mostly have to.
cement is bad, then weis a portland cement that
mixed with some additives and water.

8. The Final Preset Depth Test
Actually in drilling we will do such the same
thing repeatedly until we reach the final preset
depth. And when the final preset depth is
expected to be reached (usually known from the
rock cuttings), we do 3 kind of tests (may be
more) in order to ensure that that was the final
depth. The tests are: well logging, drill stem
testing, and core sampling

9. Well Logging
The purpose of this test is to take a
measurement of the rock formation there. And
in well logging, we knew several methods such
electrical logging, radioactive logging, mud
logging, and accoustic logging

10. Drill Stem Testing
The drill stem testing purpose is to measure the
pressure of the recent depth in the hole by using
such a device.

11. Core Sampling
Core sampling, don’t misunderstood this as mud
logging, they are DIFFERENT. In core sampling or
coring, you take the whole long formation from
the top into the reservoir using a pipe then you
analyzed it, not analyzing the rock cuttings that
is being delivered by the drilling mud.

12. After the test done and the results was positive
that it is the final depth, we start doing as what
we call for well completion, and this is the one
step we do before starting the production
phase.

13. Well Completion
While the the perforating gun, formation is
If useuse acid, when the reservoirwe will use
Wewe hydraulic fracturing is being implemented
begin the well completion by lowering doing
when limestone. rock is is we down, goes
mainlythe charges to create holes that same
explosive reservoirperforation,sent knew several
the perforation. In The acidmainly sandstone. In
HF, we tunnel, by dissolving the limestone. If
to make the casing on the rock we fluid that
through use a high enough viscosity use to so
methodsathat basedinto the what formation, do
contain proppant that the perforating add
that we can make such tunnel in the into gun,
the perforation. We canause pumped formation
limestone formation is hard, we the
reservoir
pressure on the acid
in which oil hydraulic fracturing method. But
acid, andin can flow.flow. to make the tunnel.
high pressure
The proppant hold the the crack same
however, the 3 of them has theopen. purpose:
to do a perforation in our reservoir formation.

14. Well Completion
After the perforation is done, we put the tubing
on the hole as a conduit for oil and gas to flow
up the well. The tubing is being hold by the
packers to form a seal around the outside of the
tubing, so it will be steady. Finally we put a
multivalve structure (the chrismast tree) at the
top of the tubing, the christmas tress allow us to
control the flow of the oil and also to make such
a great pressure difference between the surface
and the reservoir.

15. Thank you for your attention!