Yuav Ua Li Cas Txo Qhov Kev Sib Deev Hauv Qhov Ncauj - Khoom Xov Xwm

Yuav ua li cas kom txo tau qhov sib txawv ntawm borehole: Phau Ntawv Qhia Txog Kev Nyab Xeeb & Ncaj Drilling

Borehole sib txawv yog ib qho ntawm ntau tshaj - thiab kim - teeb meem ntsib thaum lub sij hawm drilling. Lub borehole deviated tsis tsuas yog cuam tshuam lub hom phiaj raug tab sis kuj ua rau kom lub zog, rub, thiab kev pheej hmoo ntawmcev lo(Yog tias koj tsis nco peb tsab xov xwm dhau los:"Vim li cas Drill Pipes tau daig?" → https://www.dminingwell.cn/why-do-drill-pipes-tau-stuck/).

Hauv phau ntawv qhia niaj hnub no, peb muab cov ncauj lus no ntxiv thiab sib tham txog cov tswv yim thiab engineering- tsom rau lub ntsiab lus:

Yuav ua li cas kom txo tau qhov sib txawv ntawm lub qhov dej - thiab ua kom cov haujlwm drilling smoother, muaj kev nyab xeeb, thiab kwv yees ntau dua.

Dab tsi ua rau Borehole Deviation?

Ua ntej kawm yuav ua li cas kom txo tau qhov sib txawv, nws yog ib qho tseem ceeb kom nkag siab qhov twg nws tuaj.
Feem ntau deviation yog tshwm sim los ntawm:

01/

Tsim Heterogeneity

● Cov khaubncaws sab nraud povtseg tawv thiab mos ua rau muaj qhov sib npaug me ntsis.

●Inclined txaj dav hlau thawb lub me ntsis sideways.

02/

Kev xaiv tsis raug Drill Bit

● txhoj puab heev → ua rau sab - txiav

● Ntau dhau → ua raws li kev tsim tsis muaj zog

03/

Tshaj WOB (Nyob ntawm ntsis)

Siab WOB thawb lub ntsis kom ua raws li txoj kev ntawm qhov tsawg kawg nkaus tsis kam → sib txawv nce.

04/

Tsis zoo Stabilization

Tsis txaus stabilizers nyob rau hauv BHA=tsis ruaj tsis khov drilling trajectory.

Txhawm rau nkag siab tias yog vim li cas cov kav dej laum tau daig thiab qhov sib txawv zoo npaum li cas tuaj yeem ua rau cov yeeb nkab daig, thov xa mus rau:

Vim li cas ho Drill Pipes tau daig?

https://www.dminingwell.cn/why-do-drill-pipes-tau-stuck/

Cov tswv yim ua kom txo tau qhov sib txawv ntawm qhov borehole

2.1 Xaiv Txoj Cai Drill Bit Structure

Kev xaiv me ntsis ncaj qha cuam tshuam rau tus cwj pwm coj.

Tsim	Pom zoo Bit	Vim li cas
Pob zeb nyuaj	PDC me ntsis nrog kev tiv thaiv zoo dua	Tswj txoj kev ncaj
Mos / nruab nrab pob zeb	Tricone me ntsis	Txo kev txiav sab tsis xav tau
Abrasive tsim	Bi-center lossis reaming me ntsis	Txhim kho trajectory tswj

Tswv yim:
Lub ntsuas ntsuas - tiv thaiv PDC me ntsis txo cov kev txav mus los → txhim kho txoj hauv kev borehole.

2.2 Optimize Qhov hnyav ntawm ntsis (WOB) & Kev sib hloov ceev (RPM)

◆ Ntau dhau WOB → me ntsis thawb rau sab → sib txawv nce

◆ Tsim nyog RPM + nruab nrab WOB → txhawb nqa smoother thiab straighter drilling

Pom zoo xyaum:

1. Pib nrog qis WOB

2. Maj mam nce thaum saib xyuas lub zog

3.Ua kom vibration yam tsawg kawg nkaus

2.3 Siv cov Stabilizers zoo hauv BHA

Stabilizers yog cov cuab yeej No.1 los txo kev sib txawv.

Stabilizer placement txoj cai (Cov ntsiab lus ntawm kev ua tau zoo):

1 ze ib

1 mid -BHA

1 nyob ze laum dab tshos

Qhov no tsim ibpeb -point alignment system, kom ntseeg tau tias BHA khiav ncaj nraim.

2.4 Tswj Cov Txheej Txheem Drilling tsis tu ncua

Zoo qaij feem ntau stems los ntawm: inconsistent tswj txoj kev, xws li tam sim ntawd hloov nyob rau hauv ceev thiab siv.

■ Ua kom lub zog noj tsis tu ncua

■ Tsis txhob hloov RPM tam sim ntawd

■ Txo qhov drilling poob siab & kev co

Nruam, ruaj khov drilling=ncaj boreholes.

2.5 Txhim kho qhov dej huv huv

Yog tias lub qhov tsis raug ntxuav kom zoo:

Cuttings accumulate → BHA yog yuam rau sab → deviation zuj zus

Txhim kho kev ntxuav los ntawm:

Ua kom lub twj tso kua mis txaus

Siv cov kua dej viscosity siab -

Reaming tsis tu ncua

Saib xyuas annular tshaj tawm

Pom zoo nyeem:

Yuav Tswj Drilling Fluid Density li cas
https://www.dminingwell.cn/how-to-tswj-drilling-kua-density/

2.6 Ream lub borehole tsis tu ncua

Reaming tuaj yeem:

■ Tshem tawm cov ledges

■ Qhib txoj kev

■ Tsim ib lub qhov geometry

Yog li txo qhov muaj feem ntawm BHA drifting sideways.

2.7 Siv Siab -Cov cuab yeej ntsuas qhov tseeb

Txhawm rau tswj kev sib txawv, koj yuav tsum ntsuas qhov tseeb ua ntej.

Cov cuab yeej pom zoo:

■ Cov cuab yeej tshawb fawb Gyro

■ Downhole inclinometers

■MWD (Kev ntsuas-Thaum-Drilling)

■ Sib nqus ib zaug -shot instruments

Siab - kev soj ntsuam zaus=Kev kho ntxov=Kev txuag nqi.

Yuav ua li cas kho qhov sib txawv thaum nws tshwm sim

3.1 Siv Pendulum BHA

Ntxiv stabilizer saum toj no me ntsis, tso cai rau cov nyhuv pendulum thawb BHA rov qab mus rau ntsug.

3.2 Siv lub Steerable Motor lossis Bent Sub

Rau kev taw qhia kev siv → nquag steer lub borehole.

3.3 Txo WOB

Tsawg me ntsis siab → yooj yim rau redirect trajectory.

3.4 Hloov mus rau qis dua -Sidecut Bit

Yog tias qhov me ntsis txhoj puab heev, hloov ASAP.

Vim Li Cas Txo Qhov Ntsuas Qhov Ntsuas Qhov Ntsuas

Txo deviation ua rau:

Tsawg kev pheej hmoo ntawmcov kav dej daig
Siab dua drilling raug
Tsawg roj & siv sijhawm
Cov khoom siv qis dua hnav
Kev txhim kho casing zoo dua
Ntau dua drilling efficiency thiab kev nyab xeeb

Xaus

Qhov sib txawv ntawm lub borehole yog qhov tsis muaj nyob rau hauv cov xwm txheej tiag tiag drilling - tab sis nrog txoj cai engineering, nws tuaj yeem txo qis kom zoo.

Los ntawm kev thov:

● Kho qhov laum me ntsis xaiv

●Stabilizers kom zoo

● Optimized drilling tsis

●Txoj kev tu lub qhov zoo

● Kev tshawb fawb tseeb

Koj tuaj yeem txhim kho kev ua haujlwm zoo drilling, tiv thaiv kev sib tsoo cov yeeb nkab, thiab tswj kom muaj kev nyab xeeb, ua haujlwm siab -.