problems translation query eloquen laravel 5.5

Query in pure SQL, is incomplete because you need to match the user_id with something; for example put like this:

user_id = 1

With the above, the sentence would be complete; now passing it first to Laravel query builder Fluent would stay like this:

$data = \DB::table('usuarios')
        ->where('usuario_ad', 'danielad')
        ->where('user_id', 2)
        ->get();

That is, in the previous code, equal the user_id with 2 as a mere example

Now that same consultation with Eloquent

$data = User::where('usuario_ad', 'danielad')
         ->where('user_id', 2)
         ->get();

I simply put the Facade \DB with the name of the model, which in this case I put User but it should have if you have it that you have declared

On the other hand as a final point, to achieve this

where(.....) AND(.......)

In Laravel you just have to link, for example, the access to two methods where in this way

where() ->where()