Temperature during Circulating

pwptemp.calc_temp(trajectory, casings=None, set_inputs=None, operation='drilling', time_steps=210, smooth=True, cells_no=None)

Function to calculate the well temperature distribution during a specific operation at a certain time.

Parameters

• trajectory – wellbore trajectory excel|csv|dataframe|list

• casings – list of dictionaries with casings characteristics (od, id and depth)

• set_inputs – dictionary with parameters to set.

• operation – define operation type. (‘drilling’, ‘circulating’)

• time_steps – number of time steps to run calculations.

• smooth – smooth the temperature profiles.

• cells_no – (int) number of cells. If None -> keep same number of cells than trajectory

Returns

Well temperature distribution object

pwptemp.temperature_behavior(well)

Function to simulate the temperature behavior.

Parameters

well (obj) – well temperature distribution object

Returns

temperature behavior object

Example

>>> import pwptemp as pt
>>> import well_profile as wp

>>> trajectory = wp.load('trajectory1.xlsx', equidistant=True)      # using well_profile to load a trajectory

>>> casings = [{'od': 12, 'id': 11, 'depth': 1200},       # creating 3 casings with respective parameters
>>>            {'od': 10, 'id': 9, 'depth': 1500},       # diameter [in] and depth [m]
>>>            {'od': 8, 'id': 7, 'depth': 2400}]

>>> well = pt.calc_temp(trajectory,     # calculate the well temperature distribution using pwptemp
>>>                     casings,
>>>                     set_inputs={'water_depth': 0,       # water depth [m]
>>>                                 'temp_inlet': 20,       # inlet fluid temperature [°C]
>>>                                 'time': 10}             # circulation time [h]
>>>                     operation='circulating',

>>> pt.plot_distribution(well).show()

The table below shows the available inputs that can be set when using the parameter set_inputs

Name	Units
time	h
temp_inlet	°C
temp_surface	°C
water_depth	in
pipe_id	in
pipe_od	in
riser_id	in
riser_od	in
fm_diam	in
flowrate	m3/min
Thermal Conductivities————-
tc_fluid	W / (m °C)
tc_csg	W / (m °C)
tc_cem	W / (m °C)
tc_pipe	W / (m °C)
tc_fm	W / (m °C)
tc_riser	W / (m °C)
tc_seawater	W / (m °C)
Specific Heat Capacities———–
shc_fluid	J / (kg °C)
shc_csg	J / (kg °C)
shc_cem	J / (kg °C)
shc_pipe	J / (kg °C)
shc_riser	J / (kg °C)
shc_seawater	J / (kg °C)
shc_fm	J / (kg °C)
Densities————————–
rho_fluid	sg
rho_pipe	sg
rho_csg	sg
rho_riser	sg
rho_fm	sg
rho_seawater	sg
rho_cem	sg
Others—————————–
th_grad_fm	°C/m
th_grad_seawater	°C/m
hole_diam	m
rpm	rev. per min.
tbit	kN*m
wob	kN
rop	m/h
an	in^2
bit_n	0 to 1
dp_e	0 to 1
thao_o	Pa
beta	Pa
alpha	1/°C
k	Pa*s^n
n	dimensionless
visc	cP

Web Application

There is also the web-app based on pwptemp: