Nhau

IyoMota Inoshanda Nepose (PDM), inozivikanwawo se"mota yedhaka,”chinhu chakakoshachishandiso chekuboorerainoshandiswa mukushanda kwemafuta negasi. Inoshandura simba re hydraulic kubva mumvura inocherwa (matope) kuita kutenderera kwemuchina kuti ifambise drill bit, zvichiita kuti ive yakakosha pakucherwa kwegwara, matsime akatwasuka, uye kutsausa nzira.

I. Chimiro uye Nheyo yeKushanda

1. Zvikamu Zvikuru

Vharuvhu Yekupfuura: Inobvumira kufamba kwemvura panguva yekugumburwa kudzivirira kukwira kwedzvinyiriro.

Chikamu cheMotokari: Chikamu chesimba repakati, chinestator(chubhu ine elastomer) uyerotor(sikuruu yesimbi yakatenderera).

Joinhi Yese: Inoshandura kufamba kwerotor kuita kutenderera kwakadzika.

Mugodhi weDrive: Inotumira torque ku drill bit, ichitsigirwa ne bearing assemblies ye axial/radial loads.

2.Nheyo yekushanda

Mvura inoboorwa ine simba guru inopinda mumota, ichimanikidza rotor kuti itenderere mukati me stator mukufamba kwemapuraneti (kutenderera + kutenderera).

Kutenderera kwerotor kunopfuudzwa kuburikidza ne universal joint uye drive shaft kuenda ku drill bit.

Mwero wekuyerera (Q) vs. RPM (N):

N=qQ×ηv.

Q: Mwero wekuyerera (L/s)

qKutama pakuchinja (L/rev)

ηvKushanda zvakanaka kwehuwandu (kazhinji 80–90%)

II. Kupatsanurwa kwePDMs

1. Nekugadzira

Single-Lobe PDM (1:2 configuration): Kumhanya kwakanyanya, torque yakaderera (semuenzaniso, yekuboorera maburi madiki).

Multi-Lobe PDM (semuenzaniso, 5:6 configuration): Kumhanya kwakaderera, torque yakakwira (semuenzaniso, yemabhiti makuru kana maumbirwo akaomarara).

2. Nekushandisa

PDM yakajairika: Inoshandiswa mumatsime akatwasuka kana kuti akareruka.

Bent Housing PDM: Ine kona yakakombama isina kuchinjika (semuenzaniso, 1°, 1.5°, 2°) yekudzora divi.

Hybrid Turbine-PDM: Inosanganisa RPM yakakwira (turbine) ne torque yakakwira (PDM).

III. Magadzirirwo Akakosha Ekushanda

Paramita	Tsananguro
Kumhanya (RPM)	Kazhinji 100–300 RPM, zvinoenderana nekugadzirwa kwelobe uye mwero wekuyerera kwayo.
Torque (N·m)	Inowedzera nematanho emota (stator yakareba = torque yakakwira).
Kuderera kweDzvinyiriro	Inoshanda ΔP: 2–5 MPa; kumanikidzwa kwakanyanya kunogona kukanganisa stator elastomer.
Muganho wekupisa	MaStata akajairika: 120–150°C; maStata anopisa zvakanyanya (semuenzaniso, FKM): 180°C+.
Kuenderana Kwezvimedu	Inoshanda nePDC bits, roller cones, nezvimwewo (inofanira kuenderana nezvinodiwa neRPM/torque).

IV. Kusarudzwa & Mashandisirwo

1. Maitiro Ekusarudza

Kuoma kweMaumbirwo: Maumbirwo akaomarara anoda maPDM akawanda kuti torque iwedzere.

Nzira yetsime: Matsime anotungamira anoda maPDM akakombama.

Mvura Yekubhoorera: Madhaka anobva mumafuta anoda ma elastomer asingapindi mafuta (semuenzaniso, HNBR); nzvimbo dzeH₂S dzinoda zvinhu zvisingashande zvakanaka.

2. Maitiro Akajairika

Kuboorera Kwakatsetseka: Inoshandiswa ne MWD/LWD systems kuti itungamirire nemazvo.

Kutsausa & Kugadzirisa: Inopa kutenderera mushure mekubuda kwekesi.

Matsime Akadzika/Akadzika Zvakanyanya: Inoda ma stator anodziya zvakanyanya uye zvinhu zvakasimba.

V. Kukundikana Kunowanzoitwa & Kugadzirisa

Chiratidzo	Zvinogona Kukonzera	Mhinduro
Kudonha Kwekukurumidza	Kusashanda zvakanaka kwe stator/ elastomer	Tsiva stator; tarisa dhaka rakaoma.
Hapana Torque Inobuda	Kukundikana kwejoini/mubato wekutyaira wepasi rose	Ongorora uye tsiva zvikamu zvakakuvara.
Kubuda kwemvura	Kukundikana kwechisimbiso/kubatana kusina kusimba	Tsiva zvisimbiso; simbisa zvinoenderana nezvinodiwa neAPI.
Kudedera Kwakanyanya	Kusawirirana kweRotor kana kusawirirana kwe bit	Tarisa kunyatsoita kwerotor; gadzirisa bit.

VI. Mafambiro Emangwana

1.MaPDM Akangwara: Masensa akabatanidzwa ekutarisa torque/tembiricha/kuzununguka panguva chaiyo.

2.Zvishandiso Zvepamusoro: Marotor ane nanocoated, 200°C+ elastomers.

3.Masisitimu Akasanganiswa: Musanganiswa wePDM + turbine wekugadzira maumbirwo akaomarara.

Landrill inogona kupa mhando dzemamota emudhaka (PDMS) emhando yepamusoro. Kana uchidaKana muchida kuvafarira, ndapota inzwai makasununguka kutibata nesu. Tinogona kukutumirai rumwe ruzivo.

Junnie Liu

Nharembozha/Whatsapp:+0086-158 7765 8727
Email: landrill@landrilltools.com

Nguva yekutumira: Kubvumbi-03-2025